Abstract

The present invention relates to a polycarbonate composition comprising the following components, relative to the total weight of the composition: A) 40-85 wt.% of an aromatic polycarbonate, B) 1-30 wt.% of acrylonitrile-butadiene-styrene, C) 8-15 wt.% of wollastonite, D) 1-3.5 wt.% of bisphenol-A bis(diphenyl phosphate), and E) 2.5-6 wt.% of styrene-acrylonitrile-methacrylate. The present invention also relates to a shaped article made from the composition. The polycarbonate composition according to the present invention has a good combination of impact strength, heat resistance, and aesthetic appearance.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Abstract

The present invention relates to an E/E component comprising electrical conductors L1 and L2, which are connected via a thermoplastic material M. The distances between the electrical conductors L1 and L2 are dependent on the operating voltage of the E/E component. The thermoplastic material comprising polycarbonate, selected rubber-modified graft polymer and phosphorus-containing flame retardant exhibits a high tracking resistance and allows small distances and hence a small design overall.

IPC Classes  ?

• C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
• C08K 5/49 - Phosphorus-containing compounds
• C08L 51/00 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers

Abstract

10N2mN2N2NN AUS2nNN FIK2mNMAXMAX FIK2miNii 2mii 2mm) (for example in mol • h-1NI2i22) (for example in mol • h-1i2mi22) each represent the period between two successive determinations.

IPC Classes  ?

• C07C 209/36 - Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups by reduction of nitro groups bound to carbon atoms of six-membered aromatic rings
• G16B 99/00 - Subject matter not provided for in other groups of this subclass
• G16C 60/00 - Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation

Abstract

The present invention relates to a process for preparing polyether-containing thermoplastic polyurethanes and to polyether-containing thermoplastic polyurethanes obtained or obtainable by these processes. The invention further relates to the use of these polyether-containing thermoplastic polyurethanes and to articles comprising or consisting of the polyether-containing thermoplastic polyurethane. The invention moreover relates to the use of a C3 polyether homopolymer polyol in combination with a C2 polyether homopolymer polyol and/or a C2/C3 polyether block copolymer polyol and/or C4 polyether homopolymer polyol, preferably of a C3 polyether homopolymer polyol in combination with a C2/C3 polyether block copolymer polyol, for increasing the low-temperature impact strength and/or the tensile strength of polyether-containing thermoplastic polyurethanes.

IPC Classes  ?

• C08G 18/48 - Polyethers
• C08G 18/66 - Compounds of groups , , or
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic

Abstract

The invention relates to a process for producing phosgene, especially for the reaction of phosgene with organic amino compound to give organic isocyanate. In this process, at least one carbon dioxide gas stream that has been formed from a hydrolysis of organically modified carbamate and may have been freed of secondary constituents is reductively converted to carbon monoxide. The resulting carbon monoxide is reacted with chlorine in a phosgene synthesis to give phosgene. The organically modified carbamate for the process can preferably be obtained from a chemolysis of end-of-life polyurethane material, especially with alcohols, amines or amino alcohols as chemolysis reagent.

IPC Classes  ?

• C07C 269/06 - Preparation of derivatives of carbamic acid, i.e. compounds containing any of the groups the nitrogen atom not being part of nitro or nitroso groups by reactions not involving the formation of carbamate groups
• C01B 32/80 - Phosgene

Abstract

The invention relates to a system for impregnating fibers for a polyurethane pultrusion process, the system for impregnating fibers comprising an injection box (101), the injection box (101) having a cavity for the fiber material to pass through, and the cavity having an inlet (102) and an outlet (103), wherein the lower wall section (107) of the inner wall of the cavity includes one or more slopes, the lower edge of the inlet of the cavity is not lower than the lower edge of the outlet (103) of the cavity, and the slope closest to the inlet makes the inlet (102) of the cavity sloping down towards the outlet (103).

IPC Classes  ?

• B29C 70/52 - Pultrusion, i.e. forming and compressing by continuously pulling through a die
• B29B 15/12 - Coating or impregnating of reinforcements of indefinite length

Abstract

A method for operating an electrochemical reactor is disclosed. The reactor comprises, as electrodes, an anode and a cathode. Additionally, the reactor is configured to receive a feed of a starting material, to effect electrochemical reaction of the starting material into a product in the presence of a catalyst-coated electrode, and to output the product. The reactor is operated based on a set of operation parameters, the operation parameters at least comprising a voltage over the electrodes of the reactor and a dosage of catalyst solution and/or catalyst precursor solution into the feed of the starting material. The method comprises: receiving a reactor model, the reactor model describing a behavior of the reactor, including at least a relation between the voltage over the electrodes, and the dosage of catalyst solution and/or catalyst precursor solution into the starting material feed, determining an optimized dosage by optimizing the dosage of catalyst solution and/or the catalyst precursor into the starting material feed in order to minimize the voltage using the reactor model, and outputting the optimized dosage for being used at operating the reactor. Additionally, an according system is disclosed as well as a computer program product and a computer-readable storage medium.

IPC Classes  ?

• C25B 9/70 - Assemblies comprising two or more cells
• C25B 11/052 - Electrodes comprising one or more electrocatalytic coatings on a substrate
• C25B 15/00 - Operating or servicing cells
• G06F 17/11 - Complex mathematical operations for solving equations
• G06N 20/00 - Machine learning

Abstract

The invention relates to a benzopyrylium dyestuff of formula (I), wherein R200,R201, R202, R203, R204, R205, R206, R207and R2081164771661016iisopropylamino, a six-membered, saturated ring linked via the N of the amino group, which can also include an N or O and can be substituted by non-ionic random groups or a combination of at least two thereof, and/or R200with R201or R201with R202or R202with R203and/or R205with R206and/or R206with R2072222-bridge, wherein the anion Ann- has a molecular weight of ≥ 200 g/mol and contains no halogen atom.

IPC Classes  ?

• C09B 57/00 - Other synthetic dyes of known constitution
• G03H 1/00 - HOLOGRAPHIC PROCESSES OR APPARATUS - Details peculiar thereto
• G11B 7/244 - Record carriers characterised by the selection of the material of recording layers comprising organic materials only

Abstract

The invention relates to a method for treating residue from the production of organic isocyanates via the phosgenation of organic amines, comprising a step of mixing a first residue A with a second residue B, obtaining a residue mixture, wherein the residue A is obtained from the production of 1,5-pentane diisocyanate and the residue B comes from the production of an isocyanate that is different from 1,5-pentane diisocyanate. The invention also relates to the use of a first residue A from the production of 1,5-pentane diisocyanate to stabilise a second residue B from the production of at least one organic isocyanate that is different from 1,5-pentane diisocyanate, and stabilised residue mixtures.

IPC Classes  ?

• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C07C 263/18 - Separation; Purification; Stabilisation; Use of additives
• C07C 265/14 - Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton

Abstract

The present invention relates to a concentrator for heliostats used in solar tower power plants, the concentrator comprising polyurethane foam, to a process for manufacturing the concentrator, and to a use of a polyurethane foam in the concentrator.

IPC Classes  ?

• F24S 20/20 - Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
• B29C 44/34 - Component parts, details or accessories; Auxiliary operations
• B29C 44/56 - After-treatment of articles, e.g. for altering the shape
• B32B 5/18 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material
• C08G 18/18 - Catalysts containing secondary or tertiary amines or salts thereof
• C08G 18/20 - Heterocyclic amines; Salts thereof
• C08G 18/36 - Hydroxylated esters of higher fatty acids
• C08G 18/48 - Polyethers
• C08G 18/50 - Polyethers having hetero atoms other than oxygen
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• F24S 23/70 - Arrangements for concentrating solar rays for solar heat collectors with reflectors

Abstract

The present invention relates to the stabilization of lipases in layered double-hydroxide structures, polymers containing such stabilized lipases and methods for manufacturing enzymatically degradable polymers.

IPC Classes  ?

• C12N 11/093 - Polyurethanes
• C12N 11/096 - Polyesters; Polyamides
• C12N 11/14 - Enzymes or microbial cells immobilised on or in an inorganic carrier
• C12N 9/18 - Carboxylic ester hydrolases
• C12N 9/20 - Triglyceride splitting, e.g. by means of lipase
• C12N 9/96 - Stabilising an enzyme by forming an adduct or a composition; Forming enzyme conjugates
• C08J 11/10 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation

Abstract

The present invention relates to an adhesive composition, the preparation and use thereof, and an article obtained by bonding with the composition. The adhesive composition comprises an aqueous anionic polyurethane dispersion and a uretdione group-containing polyisocyanate, wherein the aqueous polyurethane dispersion comprises a polyurethane polymer and water and wherein the polyurethane polymer is obtained by the reaction of a system comprising the following components: a) a polyisocyanate; b) an isocyanate reactive group-containing compound including a polyester polyol, wherein the polyester polyol is in an amount of greater than 10% by weight, relative to the total weight of the isocyanate reactive group-containing compound; and c) a chelating agent in an amount of 0.01% to 1.95% by weight, relative to the total weight of solid constituents of the composition. The adhesive composition of the present invention has good adhesion, good high temperature resistance and aging resistance.

IPC Classes  ?

• C08G 18/02 - Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only
• C08G 18/08 - Processes
• C08G 18/12 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
• C08G 18/32 - Polyhydroxy compounds; Polyamines; Hydroxy amines
• C08G 18/38 - Low-molecular-weight compounds having hetero atoms other than oxygen
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/72 - Polyisocyanates or polyisothiocyanates
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C08G 18/80 - Masked polyisocyanates
• C09J 175/06 - Polyurethanes from polyesters

Abstract

3322 and mica as well as combinations of said fillers; and D) optionally at least one non-polymeric polymer additive and/or at least one non-polymeric processing aid, in each case different from component C, wherein the weight ratio of component B to component C is at least 0.5 and wherein the weight proportion of component B1 in component B is at least 20%, and wherein the moulding composition has a mass fraction of free bisphenol-A of less than 30 ppm. The invention also relates to: a method for producing a moulding composition; the use of the moulding composition to produce a moulded body; and a moulded body containing the moulding composition or consisting of the moulding composition.

IPC Classes  ?

• C08J 3/22 - Compounding polymers with additives, e.g. colouring using masterbatch techniques
• C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Abstract

The invention relates to a polycarbonate containing structural units derived from bisphenol-A and A) structural units that are derived from a hydroxybenzoic acid, are present as end groups, and have free COOH functionality and B) structural units that are optionally derived from a hydroxybenzoic acid, wherein component B) is selected from at least one representative from B1) structural units that are derived from a hydroxybenzoic acid, are present as end groups, and have esterified COOH functionality, and B2) structural units that are derived from a hydroxybenzoic acid and are incorporated into the polymer chain via an ester or acid anhydride group, wherein the content of free bisphenol A in the polycarbonate is at most 50 ppm and wherein, if component B is present, the ratio of the molar amount of component B1 to the sum of the molar amounts of components A and B is at most 0.07. The invention also relates to: a method for preparing such a polycarbonate; the use of such a polycarbonate in a method for preparing copolymers or thermoplastic compositions containing copolymers; a copolymer containing structural units derived from the polycarbonate; a thermoplastic (moulding) composition; and a moulded body containing the polycarbonate and/or the copolymer.

IPC Classes  ?

• C08G 64/14 - Aromatic polycarbonates not containing aliphatic unsaturation containing a chain-terminating or -crosslinking agent
• C08G 64/24 - General preparatory processes using carbonyl halides and phenols
• C08G 64/42 - Chemical after-treatment
• C08G 81/00 - Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
• C08K 3/32 - Phosphorus-containing compounds
• C08G 81/02 - Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds

Abstract

The present invention relates to a method for producing composite components with improved interlaminar bonding, the components comprising a carrier, comprising polycarbonate and at least one polyurethane layer that is in direct contact with this carrier. The invention also relates to composite components with improved interlaminar bonding, and to the use of a polycarbonate with defined OH content as a carrier material in the production of composite components with improved interlaminar bonding.

IPC Classes  ?

• B29C 45/16 - Making multilayered or multicoloured articles
• C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates
• B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
• B29K 69/00 - Use of polycarbonates as moulding material
• B29K 75/00 - Use of polyureas or polyurethanes as moulding material

Abstract

The invention relates to a process according to claim 1, in which nitric acid, as direct process product from a process for nitric acid preparation comprising the following steps: a) providing hydrogen gas (5d) and oxygen gas (5b) by performing a water electrolysis (5) in an electrolysis apparatus using electrical energy (10) produced from renewable energy and water (5c); b) providing ammonia (21b) as process product of a reaction of at least nitrogen (21a) and hydrogen gas (5d) from said water electrolysis (5) in an ammonia synthesis (21); c) preparing nitric acid (22) by reacting previously provided ammonia (21b) in a nitric acid preparation (22) at least with oxygen-containing gas (5e), is used for preparation 22 of organic amino compounds 17 for the synthesis of organic isocyanate compounds. Also described are the incorporation of this process into a process for preparing organic isocyanate compounds with these organic amino compounds, and an apparatus for performing the corresponding process.

IPC Classes  ?

• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 1/23 - Carbon monoxide or syngas
• C25B 15/08 - Supplying or removing reactants or electrolytes; Regeneration of electrolytes
• C01B 3/34 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
• C01B 3/50 - Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
• C01B 21/26 - Preparation by catalytic oxidation of ammonia
• C01B 21/38 - Nitric acid
• C01B 32/40 - Carbon monoxide
• C01B 32/80 - Phosgene
• C01C 1/04 - Preparation of ammonia by synthesis
• C07C 201/08 - Preparation of nitro compounds by substitution of hydrogen atoms by nitro groups
• C07C 209/32 - Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups
• C07C 209/36 - Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups by reduction of nitro groups bound to carbon atoms of six-membered aromatic rings
• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C10K 3/02 - Modifying the chemical composition of combustible gases containing carbon monoxide to produce an improved fuel, e.g. one of different calorific value, which may be free from carbon monoxide by catalytic treatment

Abstract

The invention relates to an improved process for the preparation of double metal cyanide (DMC) catalysts for the preparation of polyoxyalkylene polyols, preferably polyether polyols and/or polyether carbonate polyols. The invention also relates to DMC catalysts which can be obtained by means of said process and to the use of the catalysts according to the invention for the production of polyoxyalkylene polyols.

IPC Classes  ?

• B01J 27/26 - Cyanides
• B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
• B01J 31/06 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing polymers
• B01J 31/22 - Organic complexes
• B01J 37/03 - Precipitation; Co-precipitation
• B01J 37/04 - Mixing
• C08G 65/26 - Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds

Abstract

The present invention relates to a polyisocyanate mixture containing at least one polyisocyanurate polyisocyanate and at least one polyallophanate polyisocyanate, wherein the polyisocyanate mixture has an amount of monomer diisocyanate of < 0.10 wt.%, determined in accordance with DIN EN ISO 10283:2007-11 by gas chromatography using an internal standard, a isocyanurate group portion of ≥ 40 mol% to ≤ 85 mol%, determined by NMR spectroscopic analysis and based on the total amount of isocyanurate groups and allophanate groups of the polyisocyanate mixture, and an allophanate group portion of ≥ 15 mol% to ≤ 60 mol%, determined by NMR spectroscopic analysis and based on the total amount of isocyanurate groups and allophanate groups of the polyisocyanate mixture.

IPC Classes  ?

• C08G 18/78 - Nitrogen
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C09D 175/06 - Polyurethanes from polyesters

Abstract

4-66-dicarboxylic acid from an aqueous solution, comprising: A) producing the organic acid, wherein a) the organic acid is crystallised from an aqueous medium, followed by a separation of the precipitated portions of the organic acid via a solid-liquid phase separation, leaving a first aqueous solution of the organic acid; B) treating the aqueous solution of the organic acid with am Mn2+, Fe2+and/or Cu2+ metal salt, precipitating a metal compound of the organic acid, followed by a separation of the precipitated metal compound via a solid-liquid phase separation; C) carrying out a base treatment of the separated metal compound, precipitating metal hydroxide and separating precipitated metal hydroxide via a solid-liquid phase separation, leaving a basi`c aqueous solution containing anions of the organic acid; and D) crystallising organic acid from the basic aqueous solution obtained in C) by adding an inorganic acid.

IPC Classes  ?

• C07C 51/43 - Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
• C07C 51/47 - Separation; Purification; Stabilisation; Use of additives by chemisorption
• C07C 55/10 - Succinic acid
• C07C 55/14 - Adipic acid
• C07C 59/255 - Tartaric acid
• C07C 227/40 - Separation; Purification
• C07C 227/42 - Crystallisation
• C07C 229/56 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of the same non-condensed six-membered aromatic ring with amino and carboxyl groups bound in ortho- position
• C07C 227/18 - Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton from compounds containing already amino and carboxyl groups or derivatives thereof by reactions involving amino or carboxyl groups, e.g. hydrolysis of esters or amides, by formation of halides, salts or esters
• C07C 229/00 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton

Abstract

The present invention pertains to a computer-implemented method which comprises the automated and rational (computer aided) modification of chemical recipes, in particular the design of the concrete starting composition of a reaction system, for example an oligomeric or polymeric polyol system, using an optimization procedure aiming at maximizing the similarity to an original target/reference system. Furthermore, the invention pertains to a data processing apparatus comprising means for carrying out the method, a computer program product comprising instructions which, when the program is executed by a computer, cause the computer to carry out the method and a computer-readable storage medium comprising instructions which, when executed by a computer, cause the computer to carry out the method.

IPC Classes  ?

• G16C 20/10 - Analysis or design of chemical reactions, syntheses or processes

Abstract

The invention relates to a method for producing isocyantes via a gas-phase phosgenation of the corresponding amines, wherein an amine mixture formed of at least one first amine and at least one second amine, that is different from the first amine, is reacted with phosgene to produce a reaction mixture, wherein the method is characterised in that the first amine is selected from the group comprising or consisting of aliphatic and/or araliphatic amines and the second amine is selected from the group comprising or consisting of cycloaliphatic amines. The invention also relates to a product that is/can be obtained using this method and to the use of a product of this type. The invention also relates to the use of an amine mixture formed of at least one first amine and at least one second amine, that is different from the first amine, in a method for producing the corresponding isocyanates via gas-phase phosgenation in order to lower the content of acid clorine compounds and/or the content of hydrolysable chlorine in the corresponding isocyanates obtained in the production process.

IPC Classes  ?

• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C07C 265/14 - Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton

Abstract

A method of manufacturing a particulate composition comprises: III) Providing an aqueous dispersion, the dispersion comprising polymer particles, wherein the polymer of the particles has a glass transition temperature as determined by differential scanning calorimetry according to ISO 11357, second heating, at a heating and cooling rate of 20 K/ min; and II) Storing the dispersion of step I) at a temperature of ≤ 0 °C until a polymer-comprising precipitate is formed. The method further comprises: III) Grinding the precipitate of step II) at a temperature above the glass transition temperature of the polymer to obtain a particulate composition, wherein the precipitate subject to grinding has a water content of at least 5 wt.-%.

IPC Classes  ?

• C08J 3/14 - Powdering or granulating by precipitation from solutions
• C08J 3/215 - Compounding polymers with additives, e.g. colouring in the presence of a liquid phase the polymer being premixed with a liquid phase at least one additive being also premixed with a liquid phase
• C09D 7/80 - Processes for incorporating ingredients

Abstract

The invention relates to a method for producing isocyanates via gas-phase phosgenation of the corresponding amines in a phosgenation system, in which, in particular, problems due to the formation of deposits in apparatus of the phosgenation system, e.g. in particular the reaction section, during the initial operation (start-up) of the method are preferably avoided. The invention also relates to a device for carrying out the method according to the invention, and to a method for starting up a phosgenation system.

IPC Classes  ?

• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C07C 265/14 - Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton
• C07D 307/00 - Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
• B01J 3/00 - Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor

Abstract

The invention relates to a method for producing isocyanates via phosgenation, in particular gas-phase phosgenation (GPP) or liquid-phase phosgenation (FPP), of the corresponding amines, wherein an amine mixture formed of at least one first amine and at least one second amine, that is different from the first amine, is reacted with phosgene to form a reaction mixture, in which, in particular, a higher yield and/or good purity (in the forms of a lowering of the content of acid chlorine compounds (AC value) and/or of hydrolysable chlorine (HC value)) is achieved for the corresponding isocyanates obtained in the production process. The invention also relates to a product that is/can be obtained using the method according to the invention, preferably a product that is/can be obtained directly using the method according to the invention, as well as the use of said product and/or the isocyanate or isocyanate mixture which is/can be obtained using the method according to the invention. The invention further relates to a phosgenation system for carrying out the method according to the invention.

IPC Classes  ?

• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C07C 265/14 - Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton
• C07D 307/00 - Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
• B01J 3/00 - Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor

Abstract

The present invention relates to a two-component coating composition, a method of applying the composition and the use thereof, and a product obtained by coating with the coating composition. The coating composition comprises an A-component and a B-component, wherein the A-component comprises polyaspartic acid ester, polymer polyol and surface additive, and the B-component comprises polyisocyanate, and the composition has a molar ratio of isocyanate groups to amino groups of 0.2 to 5. The two-component coating composition provided by the present invention has the advantages of long pot life, long working able time, short walk-on time and high hardness.

IPC Classes  ?

• C08G 18/38 - Low-molecular-weight compounds having hetero atoms other than oxygen
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/48 - Polyethers
• C08G 18/78 - Nitrogen
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C09D 175/02 - Polyureas

Abstract

Provided is a starting material composition suitable for producing rigid isocyanurate foam excellent in both energy absorption performance and sound absorption performance, while exhibiting excellent foam moldability, appearance, and air permeability. The starting material composition for rigid isocyanurate foam according to the present invention contains a polyol composition and a polyisocyanate. The polyol composition contains a trifunctional or higher-functional polyether polyol (C) having a hydroxy value of 300 mg KOH/g or more, a polyether polyol (A) different from polyether polyol (C) having an ethylene oxide content, based on the total amount of alkylene oxide of polyether polyol (A), of 50 mass% or more, and a polyether polyol (B) different from polyether polyol (C) having an ethylene oxide content, based on the total amount of alkylene oxide of polyether polyol (B), of 10 mass% or less. The starting material composition has an isocyanate index of 105 or more and 400 or less. The content of component (A) is 30 parts by mass or more and 50 parts by mass or less, and the content of component (C) is 5 parts by mass or more and 35 parts by mass or less, each per 100 parts by mass of the total amount of the starting material composition excluding the polyisocyanate.

IPC Classes  ?

• C08G 18/16 - Catalysts
• C08G 18/18 - Catalysts containing secondary or tertiary amines or salts thereof
• C08G 18/20 - Heterocyclic amines; Salts thereof
• C08G 18/22 - Catalysts containing metal compounds
• C08G 18/30 - Low-molecular-weight compounds
• C08G 18/32 - Polyhydroxy compounds; Polyamines; Hydroxy amines
• C08G 18/48 - Polyethers
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic

Abstract

The present invention relates to a method for producing compressed, open-pore, fine-cell polyurethane rigid foams, to the polyurethane rigid foams so obtained and to their use.

IPC Classes  ?

• C08G 18/22 - Catalysts containing metal compounds
• C08G 18/36 - Hydroxylated esters of higher fatty acids
• C08G 18/48 - Polyethers
• C08G 18/66 - Compounds of groups , , or
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08J 9/36 - After-treatment

Abstract

The invention relates to a one-component burn-in system comprising A) a blocked polyisocyanate component containing at least one reaction product of a) at least one polyisocyanate component, which has at least isocyanurate and/or iminooxadiazindione structures, b) at least one branched aliphatic diole, and c) at least one secondary amine with aliphatic, cycloaliphatic, and/or araliphatic substituents, wherein the component b) is used in a quantity of more than 2 wt.% based on the total quantity of the components a) and b), and the component c) is used in a quantity which corresponds to at least 95 mol.% of the isocyanate groups mathematically still present after the reaction of the components a) and b), B) at least one binder which is reactive to isocyanate groups and comprises at least two isocyanate-reactive groups per molecule on statistical average, C) optionally catalysts, and D) optionally solvents and/or optionally auxiliary agents and additives.

IPC Classes  ?

• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C08G 18/80 - Masked polyisocyanates

Abstract

The invention relates to a method for producing a blocked polyisocyanate, having the steps of reacting A) at least one polyisocyanate component, which has at least isocyanurate and/or iminooxadiazindione structures, with B) at least one branched aliphatic diole and C) at least one secondary amine with aliphatic, cycloaliphatic, and/or araliphatic substituents. The invention is characterized in that the component B) is used in a quantity of more than 2 wt.% based on the total quantity of the components A) and B), the component C) is used in a quantity which corresponds to at least 95 mol.% of the isocyanate groups mathematically still present after the reaction of the components A) and B), and as the polyisocyanate component A), polyisocyanates are used which are produced by modifying simple linear aliphatic, cycloaliphatic, araliphatic, and/or aromatic diisocyanates and which have at least isocyanurate and/or iminooxadiazindione structures, wherein > 70 equiv.%, based on the NCO content, is used for the modification process. The invention also relates to said blocked polyisocyanates.

IPC Classes  ?

• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C08G 18/80 - Masked polyisocyanates

Abstract

The present invention relates to a method for producing polysiloxane-polycarbonate block co-condensates using specifically terminated polysiloxanes, polysiloxane-polycarbonate block co-condensates having at least one Si-O-C bond and fine siloxane domains, a moulding compound containing the polysiloxane-polycarbonate block co-condensate, a moulded part containing the polysiloxane-polycarbonate block co-condensate according to the invention, the use of a specific bisphenol as termination group of a polysiloxane in order to increase the reactivity of the polysiloxane, and the use of a specifically terminated polysiloxane in the production of a polysiloxane-polycarbonate block co-condensate in order to increase the proportion of covalent bonds between the siloxane blocks and the polycarbonate blocks.

IPC Classes  ?

• C08G 77/448 - Block- or graft-polymers containing polysiloxane sequences containing polycarbonate sequences
• C08G 64/18 - Block or graft polymers

Abstract

The present invention relates to a LiDAR window, a method for preparing the same, and a sensor system. The LiDAR window comprises the following layers stacked together in the order of: a protective layer, a substrate, an adhesive layer and an electrically conductive heating layer having a surface square resistance of ≤ 200 ohm. The LiDAR window of the present invention can meet the functional requirement of laser signal transmission, while also having defrosting and defogging functions and meeting the requirements for automotive exterior decoration, and can be used in a sensor system.

IPC Classes  ?

• G02B 1/04 - Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
• G02B 5/20 - Filters
• G02B 1/14 - Protective coatings, e.g. hard coatings
• G02B 5/28 - Interference filters
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,

Abstract

The present invention relates to a process for preparing a polycarbonate using metal-catalyzed cross- coupling, including the reaction of an iodinated diaryl carbonate with a structure of formula (I) and a terminal alkyne with a structure of formula (IIa) or a terminal alkene with a structure of formula (IIb). Furthermore, the invention relates to a polycarbonate comprising a repeating unit with a structure of formula (IIIa) or (IIIb).

IPC Classes  ?

• C08G 61/12 - Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule

Abstract

166 alkyl group have a saponifiable chlorine content of 0.2 ppm to 19 ppm and a number average molecular weight of 8 000 g/mol to 20 000 g/mol, a molding compound comprising said polycarbonate, a molded article comprising said polycarbonate and a process for preparing a specific polycarbonate.

IPC Classes  ?

• C08G 64/14 - Aromatic polycarbonates not containing aliphatic unsaturation containing a chain-terminating or -crosslinking agent
• C08G 64/24 - General preparatory processes using carbonyl halides and phenols

Abstract

The present invention relates to an amorphous copolycarbonate comprising specific phenolic building blocks and at least one other aliphatic or aromatic building block different from the first one, a molding compound comprising said copolycarbonate, a molded article comprising said copolycarbonate and a process for preparing an amorphous copolycarbonate comprising specific phenolic building blocks and at least one other aliphatic or aromatic building block different from the first one.

IPC Classes  ?

• C08G 64/06 - Aromatic polycarbonates not containing aliphatic unsaturation
• C08G 64/30 - General preparatory processes using carbonates

Abstract

The present invention relates to a method for producing a polyester carbonate prepolymer, a polyester carbonate prepolymer, a method for producing a polyester carbonate blend using the polyester carbonate prepolymer, a polyester carbonate blend and a use of the polyester carbonate prepolymer.

IPC Classes  ?

• C08G 63/64 - Polyesters containing both carboxylic ester groups and carbonate groups
• C08G 63/191 - Hydroquinones
• C08G 64/42 - Chemical after-treatment
• C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Abstract

The present invention relates to a method for recovering raw materials from isocyanurate-containing polyurethane products, especially from the known polyurethane-polyisocyanurate rigid foams (PUR-PIR foams or PIR foams for short). The method is characterized by reacting the isocyanurate-containing polyurethane product with liquid water at a temperature in the range of 130°C to 260°C and a pressure in the range of 1.0 bar to 100 bar in the presence of a catalyst, thereby obtaining a chemolysis product, and subsequently reprocessing the chemolysis product and as a result obtaining (I) an amine that corresponds to an isocyanate of the isocyanate component, and optionally (II) a polyol of the polyol component or a reaction product of a polyol of the polyol component.

IPC Classes  ?

• C08J 11/10 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
• C08J 11/14 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with steam or water

Abstract

The present invention relates to a polycarbonate cocondensate comprising specific phenolic building blocks and another phenolic building block different from the first one, a molding compound comprising said polycarbonate cocondensate, a molded article comprising said polycarbonate condensate, a process for preparing a polycarbonate cocondensate comprising specific phenolic building blocks and another phenolic building block different from the first one and the use of a specific homopolycarbonate for preparing polycarbonate cocondensates comprising a specific phenolic building blocks.

IPC Classes  ?

• C08G 64/06 - Aromatic polycarbonates not containing aliphatic unsaturation
• C08G 64/18 - Block or graft polymers
• C08G 64/30 - General preparatory processes using carbonates

Abstract

The present invention relates to dimensionally stable open-cell, fine-cell polyurethane rigid foams, methods for their production and their use.

IPC Classes  ?

• C08G 18/48 - Polyethers
• C08G 18/72 - Polyisocyanates or polyisothiocyanates
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08J 9/12 - Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
• C08J 9/14 - Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic

Abstract

The present invention relates to two-component coating compositions containing polyaspartic ester and polyether polyol-based polyurethane prepolymers, wherein the proportion of polyols, polyether polyols and polyether polyamines and the proportion of components having a functionality > 2 in the coating composition (excluding auxiliaries, additives and solvents) are in a defined range, to a process for producing these compositions, to the use thereof for producing coatings and to the use of these coatings as a protective coating, in particular for objects that are subjected to (repeated) mechanical stresses.

IPC Classes  ?

• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/38 - Low-molecular-weight compounds having hetero atoms other than oxygen
• C08G 18/48 - Polyethers
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C09D 175/06 - Polyurethanes from polyesters

Abstract

The present invention relates to a method for producing a plastic compound having improved properties from a formulation containing at least two thermoplastic components in a multi-shaft screw machine having screw shafts rotating in the same direction, in parallel and at the same speed, wherein the plastic compound (i) does not comprise an additive which is flowable at 23°C or (ii) comprises precisely one additive which is flowable at 23°C, or (iii) comprises at least two additives which are flowable at 23°C. The present invention relates in particular to the production of a plastic compound from a formulation containing at least two thermoplastic components, at least one of which is a polycarbonate. More particularly, the screw machine is a twin-screw extruder having screw shafts rotating in the same direction, in parallel and at the same speed.

IPC Classes  ?

• B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
• B29C 48/405 - Intermeshing co-rotating screws
• B29C 48/29 - Feeding the extrusion material to the extruder in liquid form
• B29B 7/48 - Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
• B29B 7/94 - Liquid charges

Abstract

Described are thermally conductive flame-proof compositions which have a high comparative tracking index and contain bisphenol A homopolycarbonate, talc, phosphorus-containing flame retardant, fluorine-containing anti-drip agent, and anhydride-modified alpha-olefin polymer. Said compositions have a high comparative tracking index, thus allowing distances between electrical conductors in electronic and electrical components to be kept shorter than in the past.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Abstract

The invention is related to an electronic patch (EP) comprising at least: (A) a first polymeric layer (A) with a first surface a) and a second surface b) which is parallel to surface a), whereby layer (A) provides a water vapour permeability of ≥ 500 g/m²d; (B) an electronic device (B) providing at least one flat surface which is positioned on the first surface a) of the first polymeric layer (A); (C) optionally a second polymeric layer (C) providing a vapour permeability of ≥ 500 g/m²d, preferably in a range of 500 to 2000 g/m²d; (D) optionally a further layer (D) as water barrier positioned between the electronic device (B) and the first polymeric layer (A); (E) optionally an adhesive on the second surface b) of the first polymeric layer (A); (F) optionally a polymeric foam (F) with a moisture vapour transmission rate (MVTR) of ≥ 500 g/m²d, more preferably in a range of 550 to 2000 g/m²d, most preferably in a range of 600 to 1500 g/m²d covering the electronic device (B), determined according to DIN 53122-1:2001- 08; whereby the electronic patch (EP) is surrounded by the first polymeric layer (A) and optionally the second polymeric layer (C) in a way that the overall water vapour permeability of the electronic patch (EP) is ≥ 400 g/m²d as well as a process for the production of the electronic patch (EP).

IPC Classes  ?

• A61F 13/02 - Adhesive plasters or dressings

Abstract

m1m1mAmD1mA1m1m1m1mss; both screw elements have an asymmetrical screw profile; both screw elements have precisely two flight lands; for each of the two screw elements, the two flight lands thereof have different spacings from the respective rotational midpoint P of the screw profile.

IPC Classes  ?

• B29C 48/65 - Screws with two or more threads neighbouring threads or channels having different configurations, e.g. one thread being lower than its neighbouring thread
• B29C 48/54 - Screws with additional forward-feeding elements
• B29C 48/40 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws, e.g. twin screw extruders

Abstract

The present invention generally relates to a method of determining a composition of molecule fragments via a combined experimental –machine learning approach and a corresponding data processing circuit and computer program. The method comprises the step of recording sample spectroscopic data of a sample mixture of molecule fragments. The method also comprises the step of determining data sets of expected spectroscopic data. The method further comprises the step of determining matching levels between the sample spectroscopic data and expected spectroscopic data of data sets stored in a data storage device. The data sets each comprise at least one data tuple of expected spectroscopic data and a molecule fragment composition associated thereto. In at least one of the steps of determining data sets of expected spectroscopic data and determining matching levels between the sample spectroscopic data and expected spectroscopic data, the determining is carried out using a deep neural network, the deep neural network being trained based on machine learning. Furthermore, the method comprises the step of outputting data identifying a molecule fragment composition of a particular data set for which associated respective expected spectroscopic data a matching level is determined to reach or exceed a predetermined matching threshold.

IPC Classes  ?

• G16C 20/20 - Identification of molecular entities, parts thereof or of chemical compositions
• G16C 20/70 - Machine learning, data mining or chemometrics
• G06N 3/02 - Neural networks

Abstract

Described are thermally conductive flame-proof compositions which have a high comparative tracking index and contain at least 44.5 wt.% aromatic polycarbonate in which bisphenol TMC is used as a monomer unit, 30 to 40 wt.% talc, 6 to 14 wt.% phosphorus-containing flame retardant, 0.3 to 2.0 wt.% fluorine-containing anti-drip agent, and 1 to 3 wt.% anhydride-modified α-olefin polymer. Said compositions have a high comparative tracking index, thus allowing distances between electrical conductors in electronic and electrical components to be kept shorter than in the past.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Abstract

The invention relates to a method for producing aniline or an aniline-derived product, comprising the following steps: (A) providing aminobenzoic acid; (B) decarboxylating the aminobenzoic acid in a reactor at a reaction temperature in the region of 170 °C to 350 °C to form aniline and carbon dioxide, wherein the decarboxylation is carried out at a reaction pressure, at which the boiling point of aniline is reached or, preferably, exceeded, such that a first liquid, optionally solid, particle-containing phase and a second gaseous phase are formed in the reactor, wherein a gaseous flow containing aniline and carbon dioxide is discharged from the reactor; and (C) condensing and optionally cleaning the aniline contained in the gaseous flow; and (D) optionally, converting the aniline obtained in (C) into a aniline-derived product.

IPC Classes  ?

• C07C 209/68 - Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton
• C07C 211/46 - Aniline

Abstract

The invention relates to novel urethanases for the enzymatic degradation of polyurethanes and to an enzymatic process for the complete degradation of polyurethanes in defined monomers.

IPC Classes  ?

• C12N 9/80 - Hydrolases (3.) acting on carbon to nitrogen bonds other than peptide bonds (3.5) acting on amide bonds in linear amides
• C12N 9/78 - Hydrolases (3.) acting on carbon to nitrogen bonds other than peptide bonds (3.5)
• C12P 7/18 - Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic polyhydric
• C12P 7/44 - Polycarboxylic acids
• C12P 13/00 - Preparation of nitrogen-containing organic compounds
• C12P 13/02 - Amides, e.g. chloramphenicol

Abstract

nsnsnsnn (A) equals at least 13 kg/mol. The invention also relates to the use of the aforementioned graft copolymers in order to reduce the phase surface tension in mixtures containing the polymers A and B, to compositions containing the graft copolymers and the polymers A and B, and to molded bodies containing said compositions.

IPC Classes  ?

• C08F 283/02 - Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass on to polycarbonates or saturated polyesters
• C08F 290/06 - Polymers provided for in subclass
• C08L 51/08 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds

Abstract

The present invention relates to a two-component coating composition, a coating method and use of the composition, and a product coated with the coating composition. The two- component coating composition comprises a component A and a component B, wherein the component A comprises an aqueous hydroxyl-containing polyacrylic dispersion, the component B comprises a polyether-modified polyisocyanate, wherein the composition has a molar ratio of isocyanate groups and hydroxyl groups of 1.2: 1 to 2: 1; wherein the aqueous hydroxyl-containing polyacrylic dispersion has a hydroxyl content of greater than 2% by weight, relative to the total weight of solids of the aqueous hydroxyl-containing polyacrylic dispersion, and wherein the aqueous hydroxyl-containing polyacrylic dispersion has a weight- average molecular weight of not higher than 450000. The two-component coating composition provided by the present invention has a matte effect and is easy to clean.

IPC Classes  ?

• C08G 18/02 - Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only
• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/70 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C09D 175/04 - Polyurethanes
• C08G 18/62 - Polymers of compounds having carbon-to-carbon double bonds

Abstract

The present invention relates to a composition containing A) 60 to 93 wt.% of at least one aromatic polycarbonate, polyester carbonate or mixtures thereof, B) 2 to 20 wt.% of a polyester on the basis of an aromatic or cycloaliphatic dicarboxylic acid or mixtures thereof and cyclohexane dimethanol and optionally an additional aliphatic diol, and C) 1 to 10 wt.% of at least one phosphorus-containing flame retardant. The invention also relates to a component that contains the composition and to the use of components B and C in the indicated quantities in order to improve CTI and flame retardancy of polycarbonate compositions.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Abstract

The present invention relates to a polycarbonate composition comprising the following components, relative to the total weight of the composition: A) 10 - 60 wt. % of a copolycarbonate, B) 25 - 75 wt. % of a homopolycarbonate, C) 3 - 13 wt. % of a phosphorous flame retardant, D) 4 - 9 wt. % of an impact modifier, and E) 2- 14 wt. % of a polyester poly (1,4- butylene terephthalate), poly(1,4-cyclohexylenedimethylene 1,4-cyclohexanedicarboxylate), poly(2,2,4,4-tetramethyl-1,3-cyclobutylene terephthalate) copolyester, and a combination thereof. The present invention also relates to a shaped article made from the composition. The polycarbonate composition according to the present invention has a good combination of comparative tracking index, high heat resistance, good impact resistance and flame retardancy.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Abstract

The invention relates to an EE device comprising, depending on the operating voltage applied, different distance ranges between the electrical conductors, the distances being so small that already the material used between the electrical conductors results in a very high comparative tracking index. Surprisingly, this material is a polycarbonate-based material the comparative tracking index of which is significantly increased when relatively small amounts of fluorine-containing anti-dripping agent and phosphorus-based retardant are added.

IPC Classes  ?

• H01B 3/42 - Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes polyacetals
• C09K 21/14 - Macromolecular materials
• C08K 5/521 - Esters of phosphoric acids, e.g. of H3PO4
• C08K 5/5399 - Phosphorus bound to nitrogen
• C08L 27/18 - Homopolymers or copolymers of tetrafluoroethene
• C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates
• C09K 21/12 - Organic materials containing phosphorus

Abstract

Described are thermoplastic compositions on the basis of aromatic polycarbonate having a high comparative tracking index, good flame retardancy and a high heat deflection temperature. The compositions contain a combination of polyalkyl(meth)acrylate, phosphorus-containing flame retardant and fluorine-containing anti-dripping agent.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Abstract

Described are thermoplastic compositions on the basis of aromatic polycarbonate having a high comparative tracking index, good flame retardancy and a high heat deflection temperature. The compositions contain a combination of (meth)acrylate copolymer, phosphorus-containing flame retardant and fluorine-containing anti-dripping agent.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Abstract

The invention relates to a multi-layer body, comprising (I) a carrier layer made of a special thermoplastic polycarbonate molding compound and (II) a metal layer which has one or more recesses. The invention also relates to a lighting or display unit, comprising the multi-layer body and a light source, to a method for producing the multi-layer body, and to the use of the special thermoplastic polycarbonate molding compound as a carrier layer of such a multi-layer body.

IPC Classes  ?

• B32B 15/08 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
• B32B 15/082 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising acrylic resins
• B32B 27/36 - Layered products essentially comprising synthetic resin comprising polyesters
• C08F 279/04 - Vinyl aromatic monomers and nitriles as the only monomers
• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers
• C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates
• C25D 5/56 - Electroplating of non-metallic surfaces of plastics
• C23C 14/35 - Sputtering by application of a magnetic field, e.g. magnetron sputtering
• F21V 7/00 - Reflectors for light sources
• C23C 18/16 - Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, i.e. electroless plating
• F21S 2/00 - Systems of lighting devices, not provided for in main groups  or , e.g. of modular construction
• F21V 33/00 - Structural combinations of lighting devices with other articles, not otherwise provided for

Abstract

The invention relates to a multi-layer body, comprising (I) a carrier layer made of a special thermoplastic polycarbonate molding compound and (II) a layer made of a material selected from the group consisting of stone products, hide products, textile fabrics containing synthetic fibers, materials of plant origin or materials containing components of plant origin, or laminates containing one or more of the aforementioned materials, wherein the layer (II) has either a specified minimum transmission or at least one recess in the shape of at least one symbol, a pattern, a hole, a line, or a sign, or the layer has punctiform recesses. The invention also relates to a lighting unit, comprising the multi-layer body and a light source, to a method for producing the multi-layer body, and to the use of the special thermoplastic polycarbonate molding compound as a carrier layer of such a multi-layer body.

IPC Classes  ?

• B32B 27/06 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance
• B32B 27/12 - Layered products essentially comprising synthetic resin next to a fibrous or filamentary layer
• B32B 27/30 - Layered products essentially comprising synthetic resin comprising acrylic resin
• B32B 27/36 - Layered products essentially comprising synthetic resin comprising polyesters
• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers
• C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates
• B32B 21/08 - Layered products essentially comprising wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, next to another layer of a specific substance of fibre-reinforced resin
• B32B 27/10 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of paper or cardboard
• F21S 2/00 - Systems of lighting devices, not provided for in main groups  or , e.g. of modular construction
• F21V 33/00 - Structural combinations of lighting devices with other articles, not otherwise provided for

Abstract

The present invention relates to a NCO-terminated prepolymer for coating applications, to a process for preparing the inventive NCO-terminated prepolymer and to the use of the inventive NCO-terminated prepolymer. The present invention further relates to a two-component-system, comprising a component A), comprising at least the inventive NCO-terminated prepolymer and a component B), comprising at least one compound which comprises at least one Zerewitinoff-active group. Additionally, the present invention relates to a process for curing a composition on a substrate and to the cured article.

IPC Classes  ?

• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/62 - Polymers of compounds having carbon-to-carbon double bonds
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C09D 175/06 - Polyurethanes from polyesters
• C08G 18/24 - Catalysts containing metal compounds of tin

Abstract

The present application relates to an isocyanate-terminated prepolymer obtained by reaction of (I) At least one polyol, with a stoichiometric excess of (II) At least one monomeric diisocyanate, wherein the isocyanate-terminated prepolymer has i. a functional group equivalent weight FGEW of ≥ 560 g/mol, ii. a content of residual non-reacted monomeric diisocyanate of < 0.2 % by weight.

IPC Classes  ?

• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/12 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
• C08G 18/22 - Catalysts containing metal compounds
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/48 - Polyethers
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08G 18/78 - Nitrogen
• C08L 75/06 - Polyurethanes from polyesters
• C08L 75/08 - Polyurethanes from polyethers
• C09D 175/06 - Polyurethanes from polyesters
• C09D 175/08 - Polyurethanes from polyethers

Abstract

The invention relates to a four-start screw element for a multi-shaft screw-type extruder having screw shafts rotating in the same direction and at the same speed. Two screw elements according to the invention, opposing each other directly adjacently on two directly adjacent screw shafts, are mutually cleaned as a pair in a practical manner. The invention also relates to the use of the screw element according to the invention in a multi-shaft screw-type extruder, to a multi-shaft screw-type extruder equipped with a pair of the screw elements according to the invention, and to a method for extruding plastic or viscoelastic compounds using the screw element according to the invention.

IPC Classes  ?

• B29C 48/52 - Screws with an outer diameter varying along the longitudinal axis, e.g. for obtaining different thread clearance
• B29C 48/25 - Component parts, details or accessories; Auxiliary operations
• B29C 48/57 - Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
• B29C 48/40 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws, e.g. twin screw extruders
• B29C 48/505 - Screws
• B29B 7/48 - Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
• B29C 48/655 - Screws with two or more threads having three or more threads

Abstract

The invention relates to a compound for use as a catalyst in the preparation of polyisocyanate polyaddition products, to the preparation thereof and to the use thereof as a catalyst, preferably a thermolatent catalyst, for the preparation of polyisocyanate polyaddition products. The invention also relates to a formulation as well as to method for the preparation of polyisocyanate polyaddition products, each using the claimed compound, as well as to a polyisocyanate polyaddition product obtained or obtainable by said process. Finally, the invention relates to a coating agent for coating a substrate, which comprises or consists of the claimed polyisocyanate polyaddition product.

IPC Classes  ?

• C08G 18/24 - Catalysts containing metal compounds of tin
• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates

Abstract

The invention relates to a method according to claim 1 for the low-emission production of carbon monoxide (CO) for the production of phosgene, from which, for example, polycarbonates or organic isocyanates, and polyurethanes therefrom, can be produced using a process for the partial oxidation with gasification of polymeric recyclable materials. The invention further relates to a device that can be used for this purpose and to the use of said gasification process and/or polymeric recyclable materials to provide carbon monoxide for the production of phosgene.

IPC Classes  ?

• C01B 32/80 - Phosgene
• C01B 32/40 - Carbon monoxide
• C08J 11/10 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
• C08J 11/12 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by dry-heat treatment only
• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C08G 18/00 - Polymeric products of isocyanates or isothiocyanates
• C10B 53/07 - Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of synthetic polymeric materials, e.g. tyres

Abstract

setpointsetpointsetpointsetpointA42P2P1P1 of the product stream P1.

IPC Classes  ?

• B01D 3/42 - Regulation; Control

Abstract

The present invention relates to a polycarbonate composition comprising A) from 8 wt.% to 65 wt. % of a copolycarbonate, B) from 30 wt.% to 85 wt. % of a homopolycarbonate; C) from 0.06 wt.% to 0.30 wt.% of a fluorine-containing metal organic sulfonate; D) from 0.8 wt.% to 10 wt.% of polysilsesquioxane; E) from 0.1 wt.% to 0.7 wt.% of an anti-dripping agent; and F) from 0.1 wt.% to 5 wt.% of a hydrolysis stabilizer, relative to the total weight of the composition. The present invention also relates to a shaped article made from the composition. The polycarbonate composition according to the present invention has a good combination of flame-retardance and heat-resistance.

IPC Classes  ?

• C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates
• C08L 83/04 - Polysiloxanes
• C08K 5/42 - Sulfonic acids; Derivatives thereof
• C08L 27/18 - Homopolymers or copolymers of tetrafluoroethene
• C08K 3/34 - Silicon-containing compounds
• C08G 64/06 - Aromatic polycarbonates not containing aliphatic unsaturation

Abstract

The invention relates to a photopolymer composition comprising a) matrix polymers, b) writing monomers, c) at least one photoinitiator system, d) optionally at least one non-photopolymerisable component, e) optionally catalysts, radical stabilisers, solvents, additives and other auxiliary and/or additional materials, wherein the at least one photoinitiator system c) consists of at least one colouring agent and at least one coinitiator, wherein at least one of the colouring agents has a structure according to formula (I) and the at least one coinitiator has a calculated oxidation potential (formula II), determined according to the below formula (1) via the quantum mechanical calculation of Gibbs energies at 298 K in the basic state and the oxidised state of the coinitiator, in particular the triaryl (alkyl) borate after geometry optimisation, involving conformer energy minimisation using the AMI force field, followed by an ab-initio conformer energy calculation based on the previously determined molecular geometry coordinates, in the solvent, acetonitrile, with a solvent field correction according to the PCM method, is in the range of 1.16 V to 1.37 V relative to the saturated calomel electrode (SCE) in acetonitrile (formula III).

IPC Classes  ?

• G11B 7/24044 - Recording layers for storing data in three dimensions, e.g. volume storage
• G11B 7/245 - Record carriers characterised by the selection of the material of recording layers comprising organic materials only containing a polymeric component
• G03F 7/004 - Photosensitive materials

Abstract

The invention relates to photopolymer compositions comprising a) matrix polymers, b) writing monomers, c) at least one photoinitiator system, d) optionally at least one non-photopolymerisable component, e) optionally catalysts, radical stabilisers, solvents, additives and other auxiliary and/or additional materials, wherein the at least one photoinitiator system c) consists of at least one colouring agent and at least one coinitiator, wherein at least one of the colouring agents has a structure according to formula (II) and the at least one coinitiator has a calculated oxidation potential (E), determined according to the below formula (1) via the quantum mechanical calculation of the Gibbs energies at 298 K in the basic state and the oxidised state of the coinitiator, in particular the triarylalkylborate after geometry optimisation, involving conformer energy minimisation by means of the AMI force field, followed by an ab-initio conformer energy calculation based on the previously determined molecular geometry coordinates, and the oxidation potential in the solvent, acetonitrile, with a solvent field correction according to the PCM method, is in the range of 1.16 V to 1.37 V relative to the saturated calomel electrode (SCE) in acetonitrile.

IPC Classes  ?

• G11B 7/24044 - Recording layers for storing data in three dimensions, e.g. volume storage
• G11B 7/245 - Record carriers characterised by the selection of the material of recording layers comprising organic materials only containing a polymeric component

Abstract

ab initioab initio compliant energy computation on the basis of the previously ascertained molecular geometry coordinates, in the solvent acetonitrile using a solvent field correction according to the PCM method, ranging from 1.01 V to 1.31 V with respect to the calomel electrode (SCE) saturated in acetonitrile (1).

IPC Classes  ?

• G11B 7/24044 - Recording layers for storing data in three dimensions, e.g. volume storage
• G11B 7/245 - Record carriers characterised by the selection of the material of recording layers comprising organic materials only containing a polymeric component

Abstract

The invention relates to a method for producing isocyanates by reacting at least one amine or the salt thereof with a stoichiometric excess of phosgene in the condensed phase in the presence of a solvent, having the steps of: A) transitioning to a hot phosgenation process and B) expelling remaining phosgene and/or hydrogen chloride. The invention is characterized in that the reaction is carried out in batches in at least two reactors which are arranged parallel to one another and in that step A) and/or step B) is carried out asynchronously in at least two of the reactors arranged parallel to one another other.

IPC Classes  ?

• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C07C 263/20 - Separation; Purification
• C07C 265/14 - Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton

Abstract

The invention relates to a method for preparing isocyanates by reacting corresponding amines with phosgene. The invention further relates to an apparatus for separating exhaust gas flows from a phosgenation reaction.

IPC Classes  ?

• C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
• C07C 263/20 - Separation; Purification
• C07C 265/14 - Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton
• C07C 263/14 - Preparation of derivatives of isocyanic acid by catalytic reaction of nitro compounds with carbon monoxide

Abstract

The present invention relates to an elastomeric polyurethane comprising at least a first flame retardant in an amount of ≥ 5% to ≤ 9% by weight based on the total weight of the elastomeric polyurethane and at least one mineral filler in an amount of ≥ 3% to ≤ 5% by weight based on the total weight of the elastomeric polyurethane, wherein the at least a first flame retardant is at least one phosphorous comprising polyol, wherein the at least one mineral filler is selected from the group consisting of carbonates, sulfates, silicates, mixtures and hydrated modifications thereof and wherein the total amount of the first flame retardant and the mineral filler is in the range of ≥ 10% to ≤ 14% by weight, based on the total weight of the elastomeric polyurethane, to a process for the preparation of said elastomeric polyurethane, to the use of these elastomeric polyurethane in offshore applications, mine and quarries applications, pulp and paper applications, shoe soles applications, handling applications, military application, transport application, railway and industrial rolls, industrials tires, electric encapsulation, wheels, rollers, doctor blades, hydro cyclones, sieves, sport tracks, insulating panels, acoustic insulations, wind blades or bumpers, and to offshore applications, mine and quarries applications, pulp and paper applications, shoe soles applications, handling applications, military application, transport application, railway and industrial rolls, industrials tires, electric encapsulation, wheels, rollers, doctor blades, hydro cyclones, sieves, sport tracks, insulating panels, acoustic insulations, wind blades or bumpers comprising such a polyurethane.

IPC Classes  ?

• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/32 - Polyhydroxy compounds; Polyamines; Hydroxy amines
• C08G 18/38 - Low-molecular-weight compounds having hetero atoms other than oxygen
• C08G 18/48 - Polyethers
• C08G 18/63 - Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
• C08G 18/72 - Polyisocyanates or polyisothiocyanates
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C08L 75/08 - Polyurethanes from polyethers

Abstract

In order to increase comfort and flexibility, an ostomy pouch accessory (10) for use with at least one ostomy pouch device (12) is provided and comprises at least one sensor element (14) detecting a leak of the ostomy pouch device in at least one state of use, and also comprises at least one adhesive element (16) for removable connection to the ostomy pouch device in the relevant state of use.

IPC Classes  ?

• A61F 5/44 - Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Colostomy devices
• A61F 5/445 - Colostomy devices

Abstract

The present invention relates to a method for producing soft polyurethane foams, which have in particular a low compression hardness and/or a low compression set value (DVR), using aliphatic oligomeric polyisocyanates and monohydroxy-functional compounds, and the use of aliphatic oligomeric polyisocyanates in combination with monohydroxy-functional compounds in order to reduce the compression hardness and/or the compression set value (DVR) of soft polyurethane foams. The invention also relates to a soft polyurethane foam, that is preferably flexible, which is produced or can be produced by the aforementioned method and has a low compression hardness and/or a low compression set value (DVR), as well as to the use thereof, for example, for the production of body-supporting elements such as upholstery, mattresses, furniture, automobile seats, and motorbike seats.

IPC Classes  ?

• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/32 - Polyhydroxy compounds; Polyamines; Hydroxy amines
• C08G 18/44 - Polycarbonates
• C08G 18/66 - Compounds of groups , , or
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates

Abstract

The present invention relates to a method for producing aliphatic soft polyurethane foams using aliphatic oligomeric polyisocyanates and monohydroxy-functional compounds, wherein in particular the rising time and/or the setting time (tack-free time) is reduced when producing the soft polyurethane foams, and the soft polyurethane foams preferably have a low compression hardness and/or a low compression set value (DVR). The invention also relates to a soft polyurethane foam, that is preferably flexible, which is produced or can be produced by the aforementioned method and has a low compression hardness and/or a low compression set value (DVR), and to the use thereof, for example, for the production of body-supporting elements such as upholstery, mattresses, furniture, automobile seats, and motorbike seats. The invention also relates to the use of a monohydroxy-functional compound in combination with an aliphatic oligomeric polyisocyanate and optionally a monomeric aliphatic polyisocyanate and/or a dimeric aliphatic polyisocyanate for reducing the compression hardness and/or the compression set value of soft polyurethane foams and/or for reducing the rising time and/or setting time when producing soft polyurethane foams.

IPC Classes  ?

• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/44 - Polycarbonates
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C08G 18/32 - Polyhydroxy compounds; Polyamines; Hydroxy amines
• C08G 18/66 - Compounds of groups , , or

Abstract

The present invention relates to a polyol composition, a polyurethane reaction system, a polyurethane resin and a polyurethane composite.

IPC Classes  ?

• C08G 65/06 - Cyclic ethers having no atoms other than carbon and hydrogen outside the ring
• C08G 65/26 - Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
• C08G 18/48 - Polyethers

Abstract

The invention relates to a method for producing aliphatic soft polyurethane foams in a prepolymer method, said foams not having metal-organic catalysts or having only a very low quantity of metal-organic catalysts in particular, using aliphatic oligomeric polyisocyanates and monohydroxy-functional compounds and to the use of aliphatic oligomeric polyisocyanates in combination with monohydroxy-functional compounds in order to produce soft polyurethane foams with a very low quantity of metal-organic catalysts or without metal-organic catalysts. The invention additionally relates to an aliphatic soft polyurethane foam, preferably a flexible aliphatic soft polyurethane foam, which is produced or which can be produced according to the aforementioned method and which preferably has a low degree of compression hardness and/or a low compression set value (DVR), and to the use thereof, for example for producing body-supporting elements, such as cushions, mattresses, furniture, shoe inserts, automobile armrests, automobile seats, and motorcycle seats. The invention additionally relates to a storage-stable prepolymer mixture of an NCO-functional prepolymer and an excess component B).

IPC Classes  ?

• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/32 - Polyhydroxy compounds; Polyamines; Hydroxy amines
• C08G 18/44 - Polycarbonates
• C08G 18/66 - Compounds of groups , , or
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
• C08G 18/80 - Masked polyisocyanates

Abstract

The presentation invention relates to a process for preparing a polycarbonate using electrophilic aromatic substitution including the reaction of chlorosulfonic acid together with a specific compound of formula (2).

IPC Classes  ?

• C08G 64/06 - Aromatic polycarbonates not containing aliphatic unsaturation
• C08G 64/30 - General preparatory processes using carbonates

Abstract

The present invention relates to a process for preparing a polycarbonate using electrophilic aromatic substitution, comprising a reaction of a diaryl carbonate with a structure of formula (I) and a dichloromethylbenzene with a structure of formula (II).

IPC Classes  ?

• C08G 64/06 - Aromatic polycarbonates not containing aliphatic unsaturation
• C08G 64/30 - General preparatory processes using carbonates

Abstract

The present invention relates to a process for preparing a polycarbonate using electrophilic aromatic substitution, comprising a reaction of a diaryl carbonate with a structure of formula (I) and a primary alkyl halide with a structure of formula (IIa) or (IIb).

IPC Classes  ?

• C08G 64/06 - Aromatic polycarbonates not containing aliphatic unsaturation
• C08G 64/30 - General preparatory processes using carbonates

Abstract

The present invention relates to a polycarbonate composition and shaped articles made therefrom. The composition comprises, relative to the total weight of the composition: A) from 60 wt.% to 97.5 wt.% of at least one aromatic polycarbonate; B) from 1 wt.% to 22 wt.% of at least one chopped glass fibre; and C) from 0.05 wt.% to 1 wt.% of at least one metallic pigment flake with a particle size of 5 pm to 35 pm, wherein the metal is selected from Al, Cu, Au, Ag, and Pt. The shaped article made from the composition according to the present invention has a feathered visual effect on the surface thereof.

IPC Classes  ?

• C08K 7/14 - Glass
• C08K 3/22 - Oxides; Hydroxides of metals

Abstract

The present invention relates to a process for recovering aminobenzoic acid from an aqueous mother liquor which is produced on crystallization of aminobenzoic acid. The process comprises a step (A) of fermenting a suitable fermentable raw material in the presence of microorganisms to form aminobenzoate anions and/or aminobenzoic acid; a step (B) of crystallising aminobenzoic acid at a pH of 3.0 to 4.7, wherein this crystallisation can be carried out during and/or after the fermentation; a step (C) of extracting the aqueous mother liquor of the crystallisation using an alkanol with 8 to 12 carbon atoms to obtain a first alcoholic phase containing aminobenzoic acid and a first aqueous phase; a step (D) of back-extracting aminobenzoic acid from the first alcoholic phase using an aqueous base solution or acid solution to obtain a second aqueous phase containing anions and cations of the aminobenzoic acid and a second alcoholic phase; and a step (E) of crystallising aminobenzoic acid from the second aqueous phase by feeding the latter back into the crystallisation of step (B) or in a separate crystallisation.

IPC Classes  ?

• C07C 227/42 - Crystallisation
• C07C 229/56 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of the same non-condensed six-membered aromatic ring with amino and carboxyl groups bound in ortho- position
• C07C 229/60 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of the same non-condensed six-membered aromatic ring with amino and carboxyl groups bound in meta- or para- positions
• C12P 13/00 - Preparation of nitrogen-containing organic compounds

Abstract

The invention relates to a method for pyrolysis of polycarbonate-containing material in order to recover raw materials. The method comprises at least the following steps: (a) introducing material intended for the pyrolysis, at least comprising a polycarbonate-containing compound and an entire amount of phosphorous, organic compound, into a reactor, the entire amount relative to the entire weight of the material intended for pyrolysis having a ratio of at least 0.01 wt.% phosphor with a formal oxidation number of +5; (b) decomposing, at a temperature of 300°C to 700°C, at least the material intended for pyrolysis introduced into the reactor in step (a) and obtaining a product that is present in the gaseous phase as the pyrolysate and of pyrolysis residues that are present in a non-gaseous phase, (i) the amount of oxygen gas in the reactor during decomposition being not more than 2.0 vol.% relative to the entire volume of the gases present in the reactor, and (ii) the pyrolysate being removed from the reactor during decomposition, and (iii) the pyrolysis residues being removed from the reactor; (c) cooling the removed pyrolysate to a temperature of less than 300°C while obtaining a pyrolysis product, selected from pyrolysis condensate, pyrolysis sublimate or a mixture thereof; and (d) optionally processing the pyrolysis product. When carrying out this method in a correspondingly designed device, raw materials for producing polycarbonate-containing material, in particular phenol, can be recovered from the material intended for pyrolysis in higher yields.

IPC Classes  ?

• C08J 11/12 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by dry-heat treatment only
• C07C 37/52 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions decreasing the number of carbon atoms by splitting polyaromatic compounds, e.g. polyphenolalkanes

Abstract

The invention relates to a layer construction comprising at least one coating composition, which is partially or completely hardened, for a pigmented lacquer (Bp) and at least one coating composition, which is applied thereon, for a clear lacquer (BK), wherein the coating composition Bp contains at least one polyaspartic acid-containing component, at least one silane-functional polyisocyanate, and at least one pigment, and the coating composition BK likewise contains at least one polyaspartic acid-containing component and at least one polyisocyanate. The invention also relates to a layer system comprising a substrate, at least one coating composition Bp, which is applied onto at least one section of the substrate and is partly or completely cured, and at least one coating composition BK, which is applied thereon. The invention also relates to a method for producing a cured layer construction on a preferably metal substrate and to a layer system comprising a preferably metal substrate and a layer construction which can be obtained according to the aforementioned production method.

IPC Classes  ?

• C09D 5/00 - Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
• C09D 5/02 - Emulsion paints

Abstract

The invention relates to a method for producing volume reflection holograms with substrate- guided reconstruction beams and/or substrate-guided diffracted beams in a single-beam set- up, comprising the steps of (i) providing at least one laser beam source (100) producing a recording beam (101, 102) having a first wave vector (201, 302b, 307), (ii) providing a holographic recording medium (107, 200) on a transparent substrate (106), the substrate (106) having a first flat side facing the at least one laser beam source (100) and an second flat side facing away from the at least one laser beam source (100), wherein the holographic recording medium (107) is arranged on the first flat side or on the second flat side, (iii) providing a reflector arrangement (103, 103') arranged on the second flat side of the substrate (106), wherein the recording beam (101, 102) irradiates the holographic recording medium (107), wherein the recording beam (101, 102) passes through the holographic recording medium (107) and the substrate (106), and is reflected by the reflector arrangement (103, 103') towards the holographic recording medium (107) and the substrate (106) as a reflected beam (104) having a second wave vector (202, 303b, 306), wherein the reflected beam (104) produces an interference pattern with the recording beam in the holographic recording medium (107), the interference pattern having the form of a grating (110, 203) having a grating vector (305), the grating vector (305) being the difference vector of the wave vector (303b, 306) of the reflected beam (104) and the wave vector (302b, 307) of the recording beam (101, 102) and the grating vector (305) also being identical to the difference vector of the wave vector (303a) of a diffracted beam and the wave vector (302a) of a reconstruction beam, and wherein a first plane spanned by the recording beam and the reflected beam is different from a second plane spanned by the reconstruction beam and the diffracted beam and wherein the grating vector (305) of the grating (110, 203) is parallel to 30 the line of intersection of the first and the second plane. The invention further relates to an apparatus for producing volume reflection holograms with substrate-guided reconstruction beams and/or substrate-guided diffracted beams in a single-beam set-up..

IPC Classes  ?

• G03H 1/02 - HOLOGRAPHIC PROCESSES OR APPARATUS - Details peculiar thereto - Details
• G03H 1/04 - Processes or apparatus for producing holograms

Abstract

The invention relates to a polyol composition, a corresponding polyurethane reaction system and a polyurethane foam prepared therefrom.

IPC Classes  ?

• C08G 18/40 - High-molecular-weight compounds
• C08G 18/66 - Compounds of groups , , or
• C08G 18/48 - Polyethers
• C08G 18/50 - Polyethers having hetero atoms other than oxygen
• C08K 5/06 - Ethers; Acetals; Ketals; Ortho-esters
• C08L 75/04 - Polyurethanes

Abstract

The invention is related to a layered structure (S), providing a first surface (S1) and a second surface (S2) opposite to the first surface (S1), the layered structure (S) comprising: (a) at least one first polymer (a), preferably a poly-condensate or a co-poly-condensate, especially preferably a polycarbonate or a copolycarbonate, wherein the polymer (a) comprises a diol component (D) which comprises isosorbide in an amount of at least 48 wt.-%, preferably in a range of from 48 to 80 wt.-%, based on the total weight of the diol component (D); (b) at least one second polymer (b), preferably a poly-condensate or a co-poly-condensate, especially preferably a polycarbonate or a copolycarbonate, wherein the polymer (b) comprises a diol component (D1) which comprises isosorbide in an amount of ≤ 30 wt.-%, more preferably ≤ 10 wt.-%, especially preferably ≤ 5 wt.-%, based on the total weight of the diol component (D1); wherein polymer (a) builds at least 80 %, preferably 90 %, more preferably 100 % of the first surface (S1), based on the total surface of the first surface (S1), and polymer (b) builds at least 80 %, preferably 90 %, more preferably 100 % of the second surface (S1), based on the total surface of the first surface (S1) as well as the production process of such layered structure (S) and its uses.

IPC Classes  ?

• B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
• B32B 27/36 - Layered products essentially comprising synthetic resin comprising polyesters
• C08J 5/18 - Manufacture of films or sheets

Abstract

The present invention relates to the use of special variants of the 3-desoxyarabinoheptulosanate-7-phosphate synthase for preparing ortho-aminobenzoic acid by microbial fermentation and microorganisms which are suitable for this purpose.

IPC Classes  ?

• C12N 9/10 - Transferases (2.)
• C12N 15/52 - Genes encoding for enzymes or proenzymes
• C12P 13/22 - Tryptophan; Tyrosine; Phenylalanine; 3,4-Dihydroxyphenylalanine

Abstract

The invention is related to a process, preferably a continuous process, for producing a thermoplastic polyoxazolidinone comprising copolymerizing a diisocyanate compound with a bisepoxide compound in the presence of a catalyst in a reactor; wherein the diisocyanate compound and the bisepoxide compound are continuously and/or step-wise added preferably continuously added to the reactor and the polyoxazolidinone is continuously and/or step-wise, preferably continuously removed from the reactor.

IPC Classes  ?

• C08G 18/00 - Polymeric products of isocyanates or isothiocyanates
• C08G 18/71 - Monoisocyanates or monoisothiocyanates
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic

Abstract

The invention relates to a process for recovery of rubber-modified vinyl(co)polymer from a polycarbonate resin or an optionally shredded molded part made thereof wherein the polycarbonate resin comprises A) Polycarbonate based on aromatic or aliphatic diol or mixtures thereof B) Rubber-modified vinyl(co)polymer wherein the process comprises the steps i) Bringing into contact the resin or the optionally shredded molded part made thereof with at least one alcohol together with at least one transesterification catalyst to obtain a slurry (i) wherein the solid fraction of the slurry (i) comprises the polycarbonate resin or the optionally shredded molded part made thereof and the liquid fraction of the slurry (i) comprises the alcohol ii) heating the slurry (i) to 60 to 90 °C, preferably 65 to 85 °C, most preferably 75 to 85 °C and keeping the temperature to obtain a slurry (ii) wherein the solid fraction of the slurry (ii) comprises rubber-modified vinyl(co)polymer and the liquid fraction of the slurry comprises aliphatic and/or aromatic diol; iii) separating the solid fraction from the liquid fraction of the slurry (ii); iv) optionally washing the solid fraction; wherein both slurry (i) and slurry (ii) are free from ammonia and ammonium salts. and the use of the recovered rubber-modified vinyl (co)polymer for the production of molded parts as well as blend partner in polycarbonate blends. Further optional aspects are the recovery of aromatic and/or aliphatic diol and the use of this diol for the production of polycarbonates.

IPC Classes  ?

• C08J 11/24 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds containing hydroxyl groups
• C08J 11/14 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with steam or water
• C08G 64/00 - Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
• C07C 37/00 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
• C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates
• B29B 17/00 - Recovery of plastics or other constituents of waste material containing plastics
• C08L 55/02 - ABS [Acrylonitrile-Butadiene-Styrene] polymers

Abstract

The present invention relates to the preparation of ortho-aminobenzoic acid by means of microbial fermentation, wherein mixtures of glucose and xylose are used as fermentable substrates.

IPC Classes  ?

• C12P 13/00 - Preparation of nitrogen-containing organic compounds
• C12N 1/20 - Bacteria; Culture media therefor
• C12N 9/10 - Transferases (2.)
• C12N 9/12 - Transferases (2.) transferring phosphorus containing groups, e.g. kinases (2.7)
• C12N 9/88 - Lyases (4.)
• C12N 9/92 - Glucose isomerase
• C12N 15/52 - Genes encoding for enzymes or proenzymes
• C12R 1/15 - Corynebacterium

Abstract

The present invention relates to polyurethane elastomers, obtainable or obtained from the reaction of at least one NCO-terminated prepolymer (A), at least one polyol mixture (B), obtainable or obtained by mixing at least one polyester (B1) having a number average molecular weight (Mn) in the range of 900 g/mol to 3000 g/mol and a hydroxyl functionality of ≥ 1.7 and ≤ 4, wherein Mn has been determined by gel permeation chromatography and (B2) at least one carbodiimide (B2), at least one chain extender (C), wherein the polyol mixture (B) was stored for at least 4 weeks at 23° C after mixing of (B1) and (B2), a process for the manufacturing of those polyurethan elastomers, a kid-of-parts and to the use of those polyurethan elastomers.

IPC Classes  ?

• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates

Abstract

The invention relates to a security document (A) having a first outer side (AS1) and a second outer side (AS2) opposite the first outer side (AS1), containing at least: (A1) a first polymer film (A1), (A2) a second polymer film (A2), (A3) optionally at least one additional polymer film (A3), (A4) a security feature (A4), (A5) optionally fibres, in particular structural fibres, wherein at least one of the polymer films selected from the group consisting of the first polymer film (A1), the second polymer film (A2) and optionally the at least one additional polymer film (A3), or a combination of at least two thereof, contains a thermoplastic elastomer (TPE) or consists of at least one TPE and forms at least one of the outer sides (AS1) or (AS2). Also disclosed are a method for the production of such a security document and its use.

IPC Classes  ?

• B42D 25/324 - Reliefs
• B42D 25/328 - Diffraction gratings; Holograms
• B42D 25/36 - Identification or security features, e.g. for preventing forgery comprising special materials
• B42D 25/24 - Passports
• B42D 25/29 - Securities;  Bank notes
• B42D 25/425 - Marking by deformation, e.g. embossing
• B42D 25/455 - Associating two or more layers using heat
• B42D 25/46 - Associating two or more layers using pressure
• B42D 13/00 - Loose leaves modified for binding; Inserts
• B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
• B29C 48/16 - Articles comprising two or more components, e.g. co-extruded layers
• B32B 27/00 - Layered products essentially comprising synthetic resin
• B42D 25/45 - Associating two or more layers

Abstract

(abs.)(abs.)(abs.) is in the range of 40 °C to 120 °C, at a temperature in the range of 10 °C to 60 °C, followed by (C.II) phase separation into a first product phase and into a second product phase; and (D) processing the first product phase to obtain the polyol, comprising (D.I) separation of organic solvent by distillation and/or stripping, and (D.II) separation of amine dissolved in the first product phase by distillation so as to obtain the polyol.

IPC Classes  ?

• C08J 11/24 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds containing hydroxyl groups

Abstract

The invention relates to high blowing agent compositions that are reactive with isocyanates, to their use in the preparation of polyurethane foams and to a method for the preparation of polyurethane foams using them.

IPC Classes  ?

• C08G 18/18 - Catalysts containing secondary or tertiary amines or salts thereof
• C08G 18/48 - Polyethers
• C08G 18/72 - Polyisocyanates or polyisothiocyanates
• C08J 9/14 - Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
• C08K 5/54 - Silicon-containing compounds
• C08L 75/04 - Polyurethanes
• C08L 75/08 - Polyurethanes from polyethers
• C08G 101/00 - Manufacture of cellular products

Abstract

The present application relates to a heat-resistant thermoplastic electrostatic dissipative composition and shaped articles made therefrom. The composition comprises the following components: an aromatic polycarbonate, a polyalkylene terephthalate, a carbon nanotube and a reinforcement material. The shaped article made from the composition according to the present invention has a good combination of heat-resistance, semi-conductivity and dimensional stability.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds

Abstract

The present invention relates to the use of highly temperature-stable copolycarbonates as soluble supporting material in 3D printing, preferably in an FDM (fused deposition modeling) process. Poly(ether ketone ketone), poly(ether ether ether ketone), poly(ether ether ketone ketone), poly(ether ketone ether ketone ketone), polyarylene sulfone, polybisphenyl sulfone, polyethersulfone, polyphenylene sulfone, polysulfone, polyetherimide, polyetherimide–polycarbonate blend, or a blend containing at least two of the aforementioned polymers are used as the printing material. Butyl acetate, ethyl acetate, 2-methoxy-1-methylethyl acetate, methoxypropyl acetate, ethyl-3-ethoxypropionate, tetrahydrofuran, xylene, mesitylene, cumene, trimethyl benzene, benzene, toluene, dioxane, tetrahydropyran, or a mixture containing at least two of the aforementioned solvents are preferably used as the solvent.

IPC Classes  ?

• C08G 64/00 - Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
• B33Y 10/00 - Processes of additive manufacturing
• B29C 64/40 - Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof

Abstract

The invention relates to a method for recovering raw materials from polyurethane products, said method having a chemolysis process. The chemolysis process is characterized in that the polyurethane products are reacted with (i) an aminic chemolysis reagent selected from (a) a primary or secondary organic amine, (b) an amino alcohol with a primary or secondary amino group, or (c) a mixture of (a) and (b) and (ii) water in the presence of (iii) a catalyst at a temperature ranging from 100 °C to 195 °C and at a pressure ranging from 900 mbar (abs) to 2000 mbar (abs), wherein the mass ratio of aminic chemolysis reagent and water to the polyurethane product ranges from 0.5 to 2.5, and the mass of the water ranges from 3.0% to 22% of the mass of the aminic chemolysis reagent.

IPC Classes  ?

• C08J 11/14 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with steam or water
• C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
• C08J 11/28 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic compounds containing nitrogen, sulfur or phosphorus

Abstract

The invention relates to an isocyanate-reactive composition comprising an internal release agent, a method for production of a polyurethane sandwich element using the isocyanate-reactive composition, use of the isocyanate-reactive composition in the method for production of a polyurethane sandwich element and the polyurethane sandwich element.

IPC Classes  ?

• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
• C08G 18/48 - Polyethers
• C08G 18/64 - Macromolecular compounds not provided for by groups
• B32B 27/12 - Layered products essentially comprising synthetic resin next to a fibrous or filamentary layer
• B32B 29/02 - Layered products essentially comprising paper or cardboard next to a fibrous or filamentary layer
• B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
• C08G 18/18 - Catalysts containing secondary or tertiary amines or salts thereof
• C08G 18/16 - Catalysts
• B29K 75/00 - Use of polyureas or polyurethanes as moulding material

Abstract

The present invention relates to a process for hydrolyzing carbonates, more particularly polycarbonates, in the presence of at least one phase-transfer catalyst. The process according to the invention allows recuperating valuable raw materials from carbonates produced on an industrial scale, more particularly polycarbonates, once these have served their original purpose, and thus avoids the loss of raw materials of this kind such as would happen when they are deposed of by incineration or by sending them to landfill.

IPC Classes  ?

• C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
• C08J 11/14 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with steam or water

Abstract

A method and system for determining a target recipe of a compound with desired attributes are provided in the invention, characterized in that the method comprises: a) performing simulation synthesis for each of a plurality of recipes, and calculating on the simulation synthesis one or more descriptors of each recipe, wherein the descriptors are used to characterize the simulated product of a corresponding recipe; b) performing synthesis for each of a plurality of recipes, and measuring one or more properties of each recipe, wherein the properties are used to describe the attributes of a corresponding recipe; c) training one or more machine learning models by using the values of the descriptors and the properties obtained by step a) and step b) as training samples, wherein the machine learning models correlates the descriptors of the recipes with the properties of the recipes; and d) generating a plurality of candidate recipes, performing simulation synthesis for each of the plurality of candidate recipes, and, using the trained machine learning model obtained by step c), to predict one or more properties of each candidate recipe, thus determining one or more target recipes from the plurality of candidate recipes.

IPC Classes  ?

• G16C 20/10 - Analysis or design of chemical reactions, syntheses or processes
• G06N 3/00 - Computing arrangements based on biological models
• G16C 20/70 - Machine learning, data mining or chemometrics

Abstract

The invention relates to a coated film and a method for preparing the same, use of the coated film for manufacturing shaped bodies, a method for manufacturing shaped bodies from the coated film, and a shaped body made therefrom. The coated film comprises a plastic film with Shore hardness of not less than 80A and a coating formed by applying an aqueous coating composition to the plastic film, wherein the plastic film is a film of a thermoplastic polyurethane based on polyester polyol, and the aqueous coating composition comprises: a. 45% by weight to 85% by weight of a dispersion of an anionic polyurethane based on polycarbonate polyol; b. 0% by weight to 40% by weight of a dispersion of an anionic polyurethane based on polyether polyol; c. 2% by weight to 18% by weight of a dispersion of anionic silica; d. 0.5% by weight to 10% by weight of a blocked isocyanate; and e. 0.1% by weight to 10% by weight of an additive; the amounts above being relative to the total weight of the composition.

IPC Classes  ?

• C08G 18/80 - Masked polyisocyanates
• B32B 27/40 - Layered products essentially comprising synthetic resin comprising polyurethanes
• C08K 3/36 - Silica
• C09D 175/06 - Polyurethanes from polyesters
• C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
• C08G 18/44 - Polycarbonates

Abstract

The invention relates to a method for cleaving urethanes, in particular polyurethanes, by means of chemolysis (alcoholysis, hydrolysis, or hydroalcoholysis) in the presence of a catalyst. The chemolysis is characterized in that a salt of an oxyacid of an element of the fifth, fourteenth, or fifteenth group of the periodic table of elements or a mixture of two or more such salts is used as the catalyst, the pKb value of the anion of said salt of the oxyacid ranging from 0.10 to 6.00, preferably 0.25 to 5.00, particularly 0.50 to 4.50, wherein the catalyst does not comprise carbonate when the chemolysis is carried out as an alcoholysis (Ia), and the catalyst does not contain carbonate, orthophosphate, or metaphosphate when the chemolysis is carried out as a hydroalcoholysis.

IPC Classes  ?

• C08J 11/24 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds containing hydroxyl groups
• C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
• C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
• C08G 18/44 - Polycarbonates
• C08G 18/48 - Polyethers
• C08G 18/62 - Polymers of compounds having carbon-to-carbon double bonds
• C08G 18/71 - Monoisocyanates or monoisothiocyanates
• C08G 18/73 - Polyisocyanates or polyisothiocyanates acyclic
• C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
• C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic