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.
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
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
2.
METHOD FOR THE PRODUCTION OF A THERMOPLASTIC POLYOXAZOLIDINONE
A process for producing a thermoplastic polyoxazolidinone comprising copolymerization of a diisocyanate compound (A) with a bisepoxide compound (B) in the presence of a specific a quaternary ammonium, quaternary phoshonium and/or quaternary stibonium-based catalyst (C), a compound (D), a compound (F) wherein compound (D) and compound (F) is one or more compounds selected from the group consisting of a monofunctional isocyanate, a monofunctional epoxide, a cyclic carbonate, a monofunctional alcohol, a monofunctional amine optionally in a solvent (E), and wherein bisepoxide compound (B) comprises an epoxy-terminated oxazolidone-based prepolymer. The invention is also related to the resulting thermoplastic polyoxazolidinone.
C08G 59/40 - Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups characterised by the curing agents used
C08G 18/00 - Polymeric products of isocyanates or isothiocyanates
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.
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
4.
METHOD FOR GASIFICATION OF POLYMERIC RECYCLABLE MATERIALS FOR THE LOW-EMISSION SUPPLY OF CARBON MONOXIDE USABLE FOR THE PRODUCTION OF PHOSGENE
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.
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
The invention relates to a method for separating waste polyurethane foams, wherein for each polyurethane sample (1) of a supply stream (2) comprising polyurethane samples (1) from waste at least one respective spectrum (3) is recorded, wherein the at least one respective spectrum (3) is recorded by near-infrared spectroscopy, wherein each polyurethane sample (1) of the supply stream (2) is classified by a classification algorithm (5), which classification algorithm (5) is based on machine learning, based on the respective at least one spectrum (3) into a respective class (8a-e) of at least two classes (8a-e), wherein the supply stream (2) comprising polyurethane samples (1) is separated into at least two streams (11a-e) according to the classification into the respective class (8a-e) and wherein each class (8a-e) corresponds to a type of polyurethane. The invention also relates to a system for separating waste polyurethane foams.
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.
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).
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
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.
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
10.
TRIARYLALKYL BORATE SALTS AS COINITIATORS IN NIR PHOTOPOLYMER COMPOSITIONS
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).
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
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.
The invention relates to a method for producing a poly(anthranilamide) via the polymerisation of isatoic anhydride, preferably in the presence of a solvent, on a starter at a reaction temperature in the region of 110° C. to 300° C., wherein the starter comprises an aliphatic mono- or diamine with 5 to 13 carbon atoms, an araliphatic mono- or diamine with 7 to 15 carbon atoms, an aromatic diamine with 6 to 13 carbon atoms, a carboxylic acid amide of formula Ar—(C═O)NHR, where Ar represents an aromatic group substituted with an amine NH— or NH2 group and R represents an aromatic or aliphatic group, or a mixture of the above-mentioned starters, and wherein the solvent, if used, comprises an organic solvent, which is in liquid form at the reaction temperature, an ionic liquid or a mixture of these solvents, obtaining a poly(anthranilamide) based on the starter. The invention also relates to the poly(anthranilamide) obtained with the method according to the invention and to the use thereof in the production of fibres or composite materials.
A process for producing a thermoplastic polyoxazolidinone comprising copolymerizing a diisocyanate compound (A) with a bisepoxide compound (B) in the presence of a specific a quaternary ammonium, quaternary phoshonium and/or quaternary stibonium-based catalyst (C), a compound (D), a compound (F) wherein compound (D) and compound (F) independently comprises at least one of a monofunctional isocyanate, a monofunctional epoxide, a cyclic carbonate, a monofunctional alcohol, a monofunctional amine optionally in a solvent (E), and wherein the process is in the absence of a solvent (G) with a boiling point higher than 200° C., preferably higher than 190° C. and more preferably higher than 180° C. at 1 bar (absolute). The invention is also related to the resulting thermoplastic polyoxazolidinone.
C08G 59/40 - Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups characterised by the curing agents used
C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
C08G 18/00 - Polymeric products of isocyanates or isothiocyanates
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.
The invention relates to a polyurethane composition for preparing composites, a polyurethane composite obtained by the preparation and a method for preparing the polyurethane composite. The polyurethane composition comprises: a) an isocyanate component; b) an isocyanate-reactive component; c) a radical reaction initiator and d) an organometallic catalyst; wherein the hydroxyl value of the component b) isocyanate-reactive component is 200 mgKOH/g to 700 mgKOH/g, and the molar ratio of isocyanate groups to hydroxyl groups of the composition is 0.6 to 1.5. The polyurethane composition of the present invention has the advantages of long pot life and simple operation process. The polyurethane composite comprising the polyurethane resin matrix prepared by the polyurethane composition of the present invention has both excellent weather resistance and mechanical strength.
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.
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.
C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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.
C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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.
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
PRODUCTION OF ALIPHATIC SOFT POLYURETHANE FOAMS IN A PREPOLYMER METHOD ON THE BASIS OF ALIPHATIC OLIGOMERIC POLYISOCYANATES AND MONOHYDROXY-FUNCTIONAL COMPOUNDS
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).
C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
The present invention relates to a process of preparing a poly(anthranilamide) comprising the steps: (A) providing an anthranilate, and (B) reacting the anthranilate by polycondensation and separation of the alcohol on which the anthranilate is based in the presence of a catalyst to poly(anthranilamide), the poly(anthranilamides) obtained in this way and their use in the production of fibers of composite materials.
C08G 69/12 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from amino carboxylic acids with both amino and carboxylic groups aromatically bound
The present invention relates to a process for purifying a wastewater stream WW1 contaminated with nitrobenzene, comprising (I) stripping of the wastewater stream WW1 with a stripping gas SG1 in a continuously operated stripping column to obtain a wastewater stream WW2 which contains nitrobenzene in a concentration reduced relative to WW1 (cNB,WW2), (II) further purification of the wastewater stream WW2 in a wastewater treatment plant, wherein a target value (cNB,WW2,TARGET) is specified for the concentration of nitrobenzene in the wastewater stream WW2, which is greater than zero but takes into account the requirements of the wastewater treatment plant for the maximum content of nitrobenzene in the wastewater streams supplied thereto, wherein, for at least one combination of specified boundary conditions of (a) nitrobenzene concentration in WW1, (b) the temperature of WW1, and (c) the temperature of SG1, a set of linear mathematical relationships of the type mSG1=x·mWW1 is stored in a database, which linear mathematical relationships define a range of concentrations of nitrobenzene in WW2, wherein the set comprises, in addition to a mathematical relationship (0) which corresponds to the target value cNB,WW2,TARGET, at least a first mathematical relationship (1) for a first value of cNB,WW2, which corresponds to 98% of the target value cNB,WW2,TARGET, and a second linear mathematical relationship (2) for a second value of cNB,WW2, which corresponds to 102% of the target value cNB,WW2,TARGET, and wherein the flow rate of the stripping gas is adapted to the flow rate of the wastewater WW1 such that the flow rate of WW1 is within a range of values (AB) that is generated by the first mathematical relationship (1) and the second mathematical relationship (2) at the respective flow rate of WW1, and controlling the concentration of nitrobenzene in WW2 (cNB,WW2) by adjusting the flow rate of stripping gas SG1 accordingly in the event of a measured actual value of this concentration which is outside a window of >98% to <102% of the target value.
C02F 1/00 - Treatment of water, waste water, or sewage
B01D 3/34 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
C02F 1/10 - Treatment of water, waste water, or sewage by heating by distillation or evaporation by direct contact with a particulate solid or with a fluid, as a heat transfer medium
B01D 3/26 - Fractionating columns in which vapour and liquid flow pass each other, or in which the fluid is sprayed into the vapour, or in which a two-phase mixture is passed in one direction
25.
ISOCYANATE-TERMINATED PREPOLYMERS BASED ON POLYOXYMETHYLENE-POLYOXYALKYLENE BLOCK COPOLYMERS, PROCESS FOR THE PREPARATION AND USE THEREOF
The present invention relates to isocyanate-terminated prepolymers based on polyoxymethylene-polyoxyalkylene block copolymers, to a process for their preparation, and to the use of these isocyanate-terminated prepolymers as isocyanate components in 1- and 2-component systems for coatings, adhesives and sealants.
The present invention relates to polyphosphazenes, polyurethanes based on these polyphosphazenes, methods for their manufacture and hydrogels based on the polyurethanes. The invention further relates to the use of the hydrogels in medical, veterinary and agricultural applications. The terminal ends of the polyphosphazenes bear NCO-reactive hydrogen atoms for reaction with polyisocyanates.
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).
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).
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).
The present invention relates to a moulding compound containing: A) at least one polymer selected from the group consisting of polycarbonate and polyester carbonate; B) a polymer containing B1) at least one rubber-modified vinyl(co)polymer containing B1.1) 80 to 95 wt. %, based on B1, of at least one vinyl monomer and B1.2) 5 to 20 wt. %, based on B1, of one or more rubber-elastic polybutadiene-containing graft foundations, wherein B1 contains polybutadiene-containing rubber particles, which are grafted with the vinyl monomers B1.1 and contain inclusions of vinyl(co)polymer consisting of the vinyl monomers B1.1, and a vinyl(co)polymer matrix which consists of the vinyl monomers B1.1 and is not bonded to these rubber particles and not enclosed in rubber particles, and optionally B2) further rubber particles, grafted with vinyl monomers, from B2.1) 5 to 75 wt. %, based on B.2, of at least one vinyl monomer grafted onto B2.2) 25 to 95 wt. %, based on B2, of one or more rubber-elastic graft foundations, wherein the weight ratio of the components B1 to B2 is at least 5:1; C) a master batch, which is solid at room temperature, containing C1) one or more copolymers containing structural units derived from an olefin and structural units derived from a polar comonomer; C2) a vulcanised silicone elastomer. The invention also relates to a method for preparing the moulding compound, to the use of the moulding compound for producing moulded bodies, and to the moulded bodies themselves.
C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates
C08L 51/04 - 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 rubbers
The present invention relates to a method of manufacturing a solids-incorporating polymer comprising the steps of: I) providing an aqueous polymer dispersion, the dispersion comprising crystallizing polyurethane particles having a mean particle size of ≤500 nm and further comprising inorganic particles; II) storing the dispersion of step I) at a temperature of ≤0° C. until a precipitate is formed; III) Isolating the precipitate of step II) and IV) removing water from the isolated precipitate of step III), thereby obtaining a water-depleted precipitate. The invention also relates to a solid particulate composition which is obtainable by the method and the use of the composition as a build material in additive manufacturing processes, as a coating, an adhesive or as a rubber.
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
C08J 3/14 - Powdering or granulating by precipitation from solutions
The present invention relates to polyphosphazenes, polyurethanes based on these polyphosphazenes, methods for their manufacture and hydrogels based on the polyurethanes. The invention further relates to the use of the hydrogels in medical, veterinary and agricultural applications. The terminal ends of the polyphosphazenes bear NCO-reactive hydrogen atoms for reaction with polyisocyanates.
A61K 47/34 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers
A61L 31/14 - Materials characterised by their function or physical properties
A61L 31/06 - Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
34.
Adhesive composition and preparation method and use thereof
The invention relates to an adhesive composition, the preparation and use of said composition, and an article obtained by bonding using said composition. The adhesive composition comprises: a. an anionic aqueous polyurethane dispersion, which contains a polyurethane with enthalpy of fusion of at least 3 J/g, wherein the enthalpy of fusion is measured by DSC at 20° C.-100° C. of the first heating curve according to DIN 65467; and wherein said aqueous polyurethane dispersion has a hydroxyl content of 0.001% by weight to 0.085% by weight, relative to the total weight of the aqueous polyurethane dispersion; and b. an aqueous polyacrylate primary dispersion with a hydroxyl content of 0.5% by weight to 1.8% by weight, relative to the total weight of the aqueous polyacrylate primary dispersion; wherein the amount of the aqueous polyurethane dispersion is 30% by weight to 91% by weight, and the amount of the aqueous polyacrylate primary dispersion is 9% by weight to 70% by weight, the above weight percentages being relative to the total weight of the adhesive composition. The adhesive composition of the present invention has good high-temperature resistance.
C09J 5/06 - Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving heating of the applied adhesive
B32B 37/12 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
35.
METHOD FOR THE PRODUCTION OF A THERMOPLASTIC POLYOXAZOLIDINONE
A process for producing a thermoplastic polyoxazolidinone comprising copolymerizing a diisocyanate compound (A) with a bisepoxide compound (B) in the presence of a specific a quaternary ammonium, quaternary phoshonium and/or quaternary stibonium-based catalyst (C), a compound (D), a compound (F) wherein compound (D) and compound (F) independently comprises at least one of a monofunctional isocyanate, a monofunctional epoxide, a cyclic carbonate, a monofunctional alcohol, a monofunctional amine optionally in a solvent (E), and wherein the catalyst (C) is added in at least two portions (C-1) and (C-2). The invention is also related to the resulting thermoplastic polyoxazolidinone.
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.
The present invention relates to a flame-retardant polycarbonate composition comprising the following components:
The present invention relates to a flame-retardant polycarbonate composition comprising the following components:
A) 50-90 parts by weight of aromatic polycarbonate,
B) 3-20 parts by weight of non-core-shell impact modifier,
C) 2-15 parts by weight of at least one cyclic phosphazene of formula (V):
The present invention relates to a flame-retardant polycarbonate composition comprising the following components:
A) 50-90 parts by weight of aromatic polycarbonate,
B) 3-20 parts by weight of non-core-shell impact modifier,
C) 2-15 parts by weight of at least one cyclic phosphazene of formula (V):
The present invention relates to a flame-retardant polycarbonate composition comprising the following components:
A) 50-90 parts by weight of aromatic polycarbonate,
B) 3-20 parts by weight of non-core-shell impact modifier,
C) 2-15 parts by weight of at least one cyclic phosphazene of formula (V):
where
k is an integer from 1 to 10, the trimer content (k=1) being more than 98 mol %, based on component C, and where
R are in each case identical or different and are an amine radical, C1-C8-alkyl in each case optionally halogenated, C1-C8-alkoxy, C5-C6-cycloalkyl in each case optionally substituted by alkyl and/or halogen, C6-C20-aryloxy in each case optionally substituted by alkyl and/or halogen, and/or hydroxyl, C7-C12-aralkyl in each case optionally substituted by alkyl and/or halogen, a halogen radical, or an OH radical,
D) 0-30 parts by weight of filler,
E) 0.05-5 parts by weight of antidripping agent; and
F) 0-15 parts by weight of additional additives,
the total weight of the composition is 100 parts by weight,
preferably, the composition consists to at least 90 wt. %, more preferably at least 95 wt. %, most preferably 100 wt % of components A-F, relative to the total weight of the composition.
The present invention relates to a flame-retardant polycarbonate composition comprising the following components:
A) 50-90 parts by weight of aromatic polycarbonate,
B) 3-20 parts by weight of non-core-shell impact modifier,
C) 2-15 parts by weight of at least one cyclic phosphazene of formula (V):
where
k is an integer from 1 to 10, the trimer content (k=1) being more than 98 mol %, based on component C, and where
R are in each case identical or different and are an amine radical, C1-C8-alkyl in each case optionally halogenated, C1-C8-alkoxy, C5-C6-cycloalkyl in each case optionally substituted by alkyl and/or halogen, C6-C20-aryloxy in each case optionally substituted by alkyl and/or halogen, and/or hydroxyl, C7-C12-aralkyl in each case optionally substituted by alkyl and/or halogen, a halogen radical, or an OH radical,
D) 0-30 parts by weight of filler,
E) 0.05-5 parts by weight of antidripping agent; and
F) 0-15 parts by weight of additional additives,
the total weight of the composition is 100 parts by weight,
preferably, the composition consists to at least 90 wt. %, more preferably at least 95 wt. %, most preferably 100 wt % of components A-F, relative to the total weight of the composition.
The present invention also relates to a shaped article produced from the composition. The polycarbonate composition according to the present invention has a good combination of flame retardancy, hydrolytic stability and impact resistance, meanwhile there is no feeding issue during its production.
C08L 69/00 - Compositions of polycarbonates; Compositions of derivatives of polycarbonates
C08L 33/12 - Homopolymers or copolymers of methyl methacrylate
C08L 85/02 - Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing atoms other than silicon, sulfur, nitrogen, oxygen, and carbon; Compositions of derivatives of such polymers containing phosphorus
The present invention relates to the use of polyisocyanate compositions and trimerization catalysts for production of coatings by reaction injection molding, to the coatings obtained by the use and to correspondingly coated workpieces.
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
B29C 37/00 - Component parts, details, accessories or auxiliary operations, not covered by group or
39.
PROCESS FOR PRODUCING POLYOXYMETHYLENE-POLYOXYALKYLENE COPOLYMERS
A process for producing a polyoxymethylene-polyoxyalkylene copolymer is provided. The process comprises reacting a polymer formaldehyde compound of an alkylene oxide and a specific component (X) in the presence of a double metal cyanide (DMC) catalyst. A polyoxymethylene-polyoxyalkylene copolymer can be obtained by means of such a process and to the use of same for producing a polyurethane polymer.
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
The present invention relates to a method for operating a plant for continuous production of an isocyanate by converting a primary amine A with phosgene P whilst maintaining, based on the amino groups of the primary amine, a stoichiometric excess of phosgene in the presence of a solvent L in the liquid phase, using a first, adiabatically operated reaction chamber and a second, isothermally operated reaction chamber. The method is characterised in that a combination of measures, in particular the maintenance of a sufficiently high starting pressure and a sufficiently high starting temperature, is applied in order to bring the plant back into the target state, standard operation, starting from a state of interruption to production.
The present invention relates to a water-based coating composition, the preparation and use of the composition, a two-component coating system comprising the composition and use thereof, and an article obtained by coating with the composition or the two-component coating system. The water-based coating composition comprises a water-based UV resin; a silane-treated nanosized silicon oxide compound; and a photoinitiator; wherein per kilogram of the solid constituent of the water-based UV resin contains not less than 3 mol of ethylenically unsaturated groups, and wherein the weight ratio of the solid constituent of the nanosized silicon oxide compound to the solid constituent of the water-based UV resin is 11:20 to 73:100. The coating layer formed by the water-based coating composition of the present invention has high hardness and good adhesion, and is particularly suitable for electronic, electrical and communication equipment in the 5G field.
The invention relates to a method for producing at least one metal amino alcoholate, at least comprising the following steps (A) providing at least one amino alcohol, (B) adding at least one basic compound to the at least one amino alcohol provided in step (A) in order to obtain at least one corresponding amino alcoholate, and (C) adding at least one metal halogenide to the mixture obtained in step (C) in order to obtain a corresponding metal amino alcoholate, wherein in step (C) the at least one metal halogenide is added as a solution in a protic solvent at a concentration of 2.0 to 35.0 wt. %; a solution containing at least one metal alcoholate obtained in this manner; the use of the solution to produce a composition; a corresponding composition; the use of said composition to produce single- or multi-layer paint structures; a method for single- or multi-layer coating of a substrate with a paint structure; and a substrate coated in this manner.
C07C 213/06 - Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton from hydroxy amines by reactions involving the etherification or esterification of hydroxy groups
C08G 18/24 - Catalysts containing metal compounds of tin
B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
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.
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
44.
PYROLYSIS OF POLYCARBONATE-CONTAINING MATERIAL COMBINED WITH PHOSPHOROUS ORGANIC COMPOUND IN ORDER TO RECOVER RAW MATERIALS
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.
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
45.
METHOD FOR PRODUCING A MOULDED PART BY STRUCTURAL FOAM MOULDING, MOULDED PART OF AN EXPANDED THERMOPLASTIC MATERIAL AND USES THEREFOR
The invention relates to a method for producing a moulded part (50) by structural foam moulding, in which a polymer melt (18) is provided by melting a thermoplastic material, in which the polymer melt (18) is charged with a foaming agent (22) and in which the polymer melt (18) charged with the foaming agent (22) is injected under pressure into a cavity (26) of a mould (28), and so the polymer melt (18) fills the cavity (26) behind a melt front (34) running through the cavity (26), wherein the rate of injection at which the polymer melt (18) is injected into the cavity (26) of the mould (28) is set such that the internal pressure of the polymer melt (18) in the cavity (26), in a region (40) that follows a portion of the melt front (34) with a time delay of at most 0.15 seconds, is greater than the critical pressure of the foaming agent (22), at least at one point in time during the injection-moulding operation. The invention also relates to a moulded part (50) of an expanded thermoplastic material, wherein the moulded part (50) has a surface region with visual structuring formed by the expanded thermoplastic material of which the average ratio of the degrees of gloss measured in the direction of flow in relation to the degrees of gloss measured transversely to the direction of flow is below 1.9, preferably below 1.5, in particular below 1.2. The invention also relates to uses of such a moulded part.
B29C 44/34 - Component parts, details or accessories; Auxiliary operations
B29C 44/42 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
B29C 45/77 - Measuring, controlling or regulating of velocity or pressure of moulding material
C08J 9/04 - 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
46.
MULTILAYER CONSTRUCTION ON METAL SUBSTRATES BASED ON POLYASPARATE COATINGS
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.
METHOD FOR PRODUCING VOLUME REFLECTION HOLOGRAMS WITH SUBSTRATE-GUIDED RECONSTRUCTION BEAMS AND/OR SUBSTRATE-GUIDED DIFFRACTED BEAMS IN A SINGLE-BEAM SET-UP
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..
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.
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
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.
The invention relates to compositions containing A) at least one component having at least one uretdione group, B) at least one component having at least one hydroxyl group, C1) of at least one catalyst, containing a structural element of the general formula (I) and/or (II), wherein R1, R2, R3, R4, R5 and R6 independently of each other represent the same or different radicals meaning saturated or unsaturated, linear or branched, aliphatic, cycloaliphatic, araliphatic or aromatic organic radicals with 1 to 18 carbon atoms that are substituted or unsubstituted and/or have heteroatoms in the chain, the radicals being capable of forming, even when combined with each other and optionally together with an additional heteroatom, rings with 3 to 8 carbon atoms that can optionally be further substituted, wherein R3, R4, R5 and R6 independently of each other can also represent hydrogen, and R7 represents hydrogen or a carboxylate anion (COO−), and C2) at least one catalyst containing at least one N,N,N′-trisubstituted amidine structure and having an amidine group content (calculated as CN2; molecular weight=40) of 12.0 to 47.0 wt.-%.
The present invention relates to a polyether-modified polyisocyanate composition, which is obtainable by reacting a system containing the following components: a) a polyisocyanate having an isocyanate group functionality of 2-4.5; b) a polyoxyalkylene monoether alcohol; and c) optionally a catalyst; the polyoxyalkylene monoether alcohol has a number-average molecular weight of 900 g/mol-2000 g/mol and an oxypropylene group content of 45 wt. %-100 wt. %, relative to the total weight of the oxyalkylene group of the polyoxyalkylene monoether alcohol; the system has an equivalent ratio of isocyanate group to hydroxyl group of 5:1-110:1; the polyisocyanate composition has the following characteristics: i) the average isocyanate functionality is 1.8-4.1; ii) the isocyanate group content is 8-20 wt. %; and iii) the amount of the polyoxyalkylene monoether structure is greater than 10 wt. % and less than 50 wt. %, for characteristics ii) and iii), relative to the total weight of the polyisocyanate composition.
C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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.
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.
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
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.
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.
The invention relates to a process for preparing a polyoxyalkylene carbonate polyol by reacting a polyoxyalkylene polyol with a cyclic carbonate in the presence of an amine catalyst. The invention further relates to polyoxyalkylene carbonate polyols obtainable using the method according to the invention and to a process for preparing polyurethanes by reacting the polyoxyalkylene carbonate polyols according to the invention with polyisocyanates.
C08G 18/10 - Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
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 65/332 - Polymers modified by chemical after-treatment with organic compounds containing oxygen containing carboxyl groups, or halides or esters thereof
The present invention relates to a process for the treatment of thermoplastic polyurethane, to the treated thermoplastic polyurethane and to the use thereof.
The present invention relates to a two-component coating composition, to a method for applying the composition and to the use of the composition, and to a product obtained by coating with the coating composition. The two-component coating composition contains an A-component containing a polyaspartic ester and a B-component containing a polyether-modified polyisocyanate, and the composition has a molar ratio of isocyanate groups to amino groups of 0.8:1-4:1. The two-component coating composition provided by the invention has the advantages of a long working time, quick drying, a high hardness and a high bubble-free film thickness.
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.
(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.
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
The present invention relates to a flame-retardant polycarbonate composition comprising the following components, relative to the total weight of the composition:
A) 40-60 wt. % of at least one aromatic polycarbonate,
B) 30-50 wt. % of at least one polysiloxane-polycarbonate condensate,
C) 0.5-5 wt. % of at least one cyclic phosphazene,
D) 1-5 wt. % of at least one silicone-acrylate rubber based impact modifier,
E) 0.3-3 wt % of aluminium hydroxide oxide,
F) 0.1-1 wt. % of at least one anti-dripping agent, and
G) 0.1-1 wt. % of at least one UV absorber.
The present invention relates to a flame-retardant polycarbonate composition comprising the following components, relative to the total weight of the composition:
A) 40-60 wt. % of at least one aromatic polycarbonate,
B) 30-50 wt. % of at least one polysiloxane-polycarbonate condensate,
C) 0.5-5 wt. % of at least one cyclic phosphazene,
D) 1-5 wt. % of at least one silicone-acrylate rubber based impact modifier,
E) 0.3-3 wt % of aluminium hydroxide oxide,
F) 0.1-1 wt. % of at least one anti-dripping agent, and
G) 0.1-1 wt. % of at least one UV absorber.
The present invention also relates to a shaped article produced from the composition. The polycarbonate composition according to the present invention has a good combination of low-temperature impact performance, flame-retardancy, hydrolytic stability, anti-UV performance, and heat resistance.
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.
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
The present invention relates to a process for preparing a polyester carbonate on the basis of diacids and at least one 1,4:3,6-dianhydrohexitol and at least one additional cycloaliphatic dihydroxy compound, to a polyester carbonate and to a molding compound and a molding body containing the polyester carbonate. The polyester carbonates according to the invention are characterized by a high proportion of bio-based structural motifs and good mechanical properties and molecular weights.
The present application relates to a polycarbonate composite article, a preparation method therefor, and use thereof. The polycarbonate composite article includes a foamed polycabonate layer and a non-foamed polycarbonate film layer on the foamed polycarbonate layer. The polycarbonate composite article according to the present invention has a reduced weight and improved signal penetration performance, and can be used as an antenna housing.
The invention relates to a method for preparing a toluylene diamine mixture which, along with toluylene diamine (TDA), also contains a high-boiling fraction, such as the high-boiling fraction which is accumulated as a sump flow in the distillative preparation of product mixtures obtained by hydrogenating dinitrotoluene. The method has a step (A), namely preparing a TDA mixture containing, based on the total mass of the mixture, (1) TDA in a range of 5 mass % to 80 mass % and (2) a high-boiling fraction in a range of 20 mass % to 95 mass %; a step (B), namely distilling TDA off from the TDA mixture, thereby obtaining a liquid TDA-depleted method product, containing (1) TDA in a range of 0 mass % to 38 mass % and (2) a high-boiling fraction in a range of 62 mass % to 100 mass %; and a step (C) namely mixing water into the TDA-depleted method product in a mixing chamber, thereby obtaining a mixture mixed with water, wherein the temperature and quantity of the water to be mixed into the mixture and the temperature and quantity of the TDA-depleted method product are matched such that the resulting temperature of the mixture mixed with water ranges from 110° C. to 250° C., and the mixture mixed with water is provided as a single phase. The mixing chamber is supplied with a pressure which is greater than or equal to the water vapor partial pressure at the resulting temperature.
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.
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.
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.
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
70.
PRODUCTION OF PLASTICS BY CATALYTIC CROSSLINKING OF BLOCKED POLYISOCYANATES
The present invention relates to the production of plastics by crosslinking of blocked polyisocyanates. The plastics obtainable are characterized in that they are substantially free of urethane groups and the crosslinking of the monomers is predominantly effected by isocyanurate groups.
C08G 18/09 - Processes comprising oligomerisation of isocyanates or isothiocyanates involving reaction of a part of the isocyanate or isothiocyanate groups with each other in the reaction mixture
71.
COSMETIC COMPOSITION FOR FORMING A FILM HAVING ELEVATED ELASTICITY AND EXTENSIBILITY
The present invention relates to a cosmetic composition comprising at least one aqueous polyurethane dispersion and 0.1 to 7.5% by weight, based on the at least one polyurethane dispersion, of a mixture comprising at least one alkanediol, to a process for production thereof, to the use thereof for application to the skin and/or hair, preferably on facial skin, and to a cosmetic process for cleansing and caring for the skin and/or hair and/or nails and/or for applying a decorative effect to the skin and/or hair and/or nails, comprising applying the cosmetic composition according to the invention to the skin and/or hair and/or nails and optionally thereafter removing the composition from the skin and/or hair and/or nails.
Polycarbonate-based compositions containing polyether carbonate polyol are described. The compositions have an elevated transmittance in the VIS range as a result of the additive and further advantageous properties, for instance improved demolding characteristics. Even small amounts have a significant impact.
The invention relates to: composite elements comprising a thermoplastic material and a polyurethane adhering to said thermoplastic material; a method for producing same; and the use thereof.
The present invention relates to a process for preparing a polyester carbonate on the basis of cycloaliphatic diacids and at least one 1,4:3,6-dianhydrohexitol and at least one further aliphatic dihydroxy compound, to a polyester carbonate and to a molding compound and a molded product containing the polyester carbonate. The polyester carbonates according to the invention are characterized by good mechanical properties and molecular weights.
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.
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
The present invention relates to aqueous dispersions containing at least one polyurethane and at least one compound with a biocidal action, the at least one compound with a biocidal action containing at least one peroxide group and being present in a quantity of between 0.01 and 1,000 mmol/kg, in relation to the total aqueous dispersion, and relates to a process for preparing a biocide-free aqueous polyurethane dispersion, said process comprising at least the steps: (A) preparing an aqueous solution containing at least one polyurethane and at least one compound with a biocidal action, the at least one compound with a biocidal action containing at least one peroxide group and being present in a quantity of between 0.01 and 1,000 mmol/kg, in relation to the total aqueous dispersion; and (B) treating the aqueous dispersion from step (A) with at least one compound with an anti-oxidative action, in order to obtain the biocide-free aqueous polyurethane dispersion, and in addition relates to the use of at least one compound with an anti-oxidative action for treating an aqueous dispersion containing at least one polyurethane and at least one compound with a biocidal action, the at least one compound with a biocidal action containing at least one peroxide group and being present in a quantity of between 0.01 and 1,000 mmol/kg, in relation to the total aqueous dispersion.
The invention relates to decorative cosmetic compositions containing specific polyurethanes or aqueous dispersions thereof and containing constituents that produce decorative effects.
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 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
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.
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
79.
METHOD AND SYSTEM FOR DETERMINING A TARGET RECIPE OF A COMPOUND
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.
The present invention relates to a process for the purification of a product stream from isocyanate synthesis, wherein the isocyanate converted to the gas phase from the product stream is continuously deposited on a rotating cooled roller and removed from the roller. The present invention further relates to an apparatus for the purification of a product stream from isocyanate synthesis, wherein the apparatus has both a heated roller and a condensation roller.
The invention relates to the use of a separating medium, containing at least one essential oil or consisting of at least one essential oil, selected from the group consisting of phenols, phenylpropanoids and furanocoumarins, for separating at least two joining parts which are joined by means of an adhesive bond.
The invention relates to the use of mixtures of water and essential oils selected from the group consisting of phenols, phenylpropanoids and furanocoumarins, for separating multilayered composites for the segregated recycling of polymer/metal films.
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.
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.
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
The present invention relates to novel solvent-free, blocked isocyanate prepolymers curing at room temperature, and to a method for the production thereof. Furthermore, the present invention relates to the use of said blocked isocyanate prepolymers for producing solvent-free reactive systems and to their use for producing adhesives, sealing compounds, casting compounds, molded parts or coatings, which are curing at room temperature.
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 18/24 - Catalysts containing metal compounds of tin
C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
C08G 18/28 - Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
G) 0.1-1 wt. % of at least one UV absorber.
The present invention also relates to a shaped article produced from the composition. The polycarbonate composition according to the present invention has a good combination of low-temperature impact performance, flame-retardancy, hydrolytic stability, anti-UV performance, and heat resistance.
C08F 220/18 - Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
C08F 230/08 - Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium, or a metal containing a metal containing silicon
A resin comprises: A) a multifunctional (meth)acrylate; B) an NCO-functional polyurethane; C) a radical starter and D) a catalyst. The multifunctional (meth)acrylate A) has a viscosity at 23 °C as determined according to DIN EN ISO 2884-1 of ≤ 10000 mPa·s, the NCO- functional polyurethane B) has an average NCO group functionality of ≥ 2 and an equivalent molecular weight with respect to NCO groups of > 300 g/mol. The resin is free from isocyanate trimerization catalysts and the resin is free from NCO-reactive compounds or, if NCO-reactive compounds are present in the resin, the molar ratio of NCO groups to NCO- reactive groups is ≥ 5:1.
The invention relates to a method for producing phosgene from chlorine and carbon monoxide (1), the method being characterised in that carbon monoxide obtained by catalytic decomposition of methanol (4) is provided and this provided carbon monoxide (2) is reacted with chlorine to form phosgene (3). Using this method, low-emission phosgene for the production of isocyanates and polycarbonates can be provided, despite possible fluctuations in the provision of renewable energies. Methanol serves as the source for carbon monoxide, the methanol used for this purpose preferably being provided using regenerative energy from hydrogen and COx, where x = 1 or 2.
C01B 3/22 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of gaseous or liquid organic compounds
C01B 3/26 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons using catalysts
C07C 1/04 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon from oxides of carbon from carbon monoxide with hydrogen
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
C07C 263/10 - Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
C07C 29/151 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases
89.
PROCESS FOR PREPARING POLYOXYALKYLENE POLYESTER POLYOLS
The invention relates to a process for preparing polyoxyalkylene polyester polyols with calculated OH numbers of 320 mg (KOH)/g to 530 mg (KOH)/g by reacting a starter compound, which contains alcoholic hydroxy groups and/or amine protons, and a fatty acid ester containing an alkylene oxide. The invention further relates to polyoxyalkylene polyester polyols resulting from the method and to a preparation method for polyurethanes by reaction of the polyoxyalkylene polyester polyols according to the invention with polyisocyanates.
C08G 18/42 - Polycondensates having carboxylic or carbonic ester groups in the main chain
C08G 18/46 - Polycondensates having carboxylic or carbonic ester groups in the main chain having hetero atoms other than oxygen
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
A cold-stable NCO-containing prepolymer obtainable from the reaction of an isocyanate-reactive component comprising polyether carbonate polyols having an isocyanate component comprising methylene diphenyl diisocyanate (MDI) with high contents of 4,4′-MDI, a method for the preparation thereof, and the use thereof in one- or two-component systems for foams, elastomers, adhesives and sealants provided.
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
The present invention relates to a thermoplastic resin substrate for a curved mirror and a method for preparing the same, and a curved mirror and a head-up display comprising the thermoplastic resin substrate. The preparation method comprises the following steps: A) heating up a mold of an injection molding machine to a temperature in a range of 130-190° C. and closing the mold, B) injecting a molten thermoplastic resin into the cavity of the mold cavity, C) applying a pressure of 300-700 bar to the cavity for a period of 5 or more seconds, D) stopping applying pressure and cooling the mold to a temperature in a range of 60-100° C. within 10-50 seconds, and E) opening the mold and taking out the molded thermoplastic resin substrate, wherein a gap of 0.3-1 mm is left between the parting surfaces of the cavity of the mold prior to applying the pressure to the cavity. The thermoplastic resin substrate according to the present invention features a large size, high dimensional stability, and low surface roughness. It can be used for future augmented reality head-up displays to realize large-area, long-distance projection and high-precision imaging, thereby satisfying the requirements for driving safety and comfort of future automobiles.
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
B29C 33/38 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor characterised by the material or the manufacturing process
The present invention relates to a thermal insulation material and a preparation process thereof, and an article comprising the thermal insulation material. The thermal insulation material is made of raw materials containing the following components: 30wt%-70wt% of expanded perlite; 10 wt%-50 wt% of aqueous polyurethane dispersion; 3 wt%-25 wt% of expandable graphite; 0-15 wt% of halogen-free flame retardant; and 0.2 wt%-3 wt% of polysiloxane water repellent; the total weight of component c and component d is 5wt%- 40wt%, the above-mentioned amounts are all relative to the total weight of said raw materials; said aqueous polyurethane dispersion comprises a polyurethane polymer and water, said polyurethane polymer has a melting enthalpy of greater than 3 J/g, and the melting enthalpy is measured in the range of 20°C-100°C of the first temperature-rise curve through the DSC measurement in accordance with DIN65467: 1999. The thermal insulation material of the present invention has good mechanical strength, thermal insulation performance, and flame retardancy.
The present invention relates to novel high-value polycarbonate polyols, to processes for the production thereof, to polyisocyanate prepolymers obtainable therefrom and also polyurethane (PUR) and polyurethane urea elastomers which under particularly demanding applications show unique combinations of processing characteristics, hydrolysis and oxidation stability, mechanical and dynamic mechanical properties.
The present invention relates to a process for preparing at least one blocked polyisocyanate, comprising the following steps: (A) reacting at least one polyisocyanate with at least one thermally cleavable blocking agent to obtain at least one partially blocked polyisocyanate, (B) reacting the at least one partially blocked polyisocyanate from step (A) with at least one non-ionic hydrophilizing agent to obtain an intermediate product, and (C) reacting the intermediate product obtained in step (B) with at least one thermally cleavable blocking agent to obtain the at least one blocked polyisocyanate. The invention further relates to the use of the blocked polyisocyanate for producing coating agents, adhesives, sealants or elastomers, to corresponding coating agents, adhesives, sealants or elastomers, and to substrates that are provided with coatings obtained using the at least one blocked polyisocyanate according to the invention.
The invention relates to the use of at least one open-chain, optionally branched, ether isocyanate having an NCO functionality≥1, wherein 2 or 3 carbon atoms are present between at least one NCO group and at least one ether-oxygen atom, optionally in the presence of other reactants such as alcohols, amines, water, CO2, or of other reactants having an NCO functionality≥1, optionally in the presence of at least one catalyst, to increase the reaction speed and/or to reduce the optionally required catalyst amount during isocyanate modification. The invention further relates to a process for modifying isocyanates, to the modified isocyanates as such and to a two-component system or one-component system and to the moldings, coatings and composite parts obtainable therefrom.
C08G 18/77 - Polyisocyanates or polyisothiocyanates having hetero atoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
C08G 18/79 - Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
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
The invention relates to a method for the processing and transport of hexane-1,6-diamine or pentane-1,5-diamine comprising the steps of: a) Providing a first composition including 60 to 98 wt.-% water and 2 to 40 wt.-% hexane-1,6-diamine or pentane-1,5-diamine, b) partially removing water from the first composition by distillation at a first production location, whereby a second composition is generated, said second composition including the hexane-1,6-diamine or pentane-1,5-diamine and 1 wt.-% to 35 wt.-% water, and c) transporting said second composition during a span of time t from the first production location to a second production location, wherein the span of time t including times for optional temporary storage is at least 6 h.
The invention relates to a method for obtaining an amine from a composition by means of distillation and a composition obtainable by that method. The invention also relates to a method for the production of an isocyanate from the composition obtainable.
The present invention relates to a method for preparing polyether carbonate polyols by adding alkylene oxide and carbon dioxide to a H-functional starter substance in the presence of a DMC catalyst or a metal complex catalyst based on the metals cobalt and/or zinc, wherein (γ) alkylene oxide and carbon dioxide are added to a H-functional starter substance in a reactor in the presence of a DMC catalyst or a metal complex catalyst based on the metals cobalt and/or zinc, characterized in that the alkylene oxide contains a proportion of 5 to 50 wt. % ethylene oxide, based on the overall weight of the alkylene oxide used, and the addition of the ethylene oxide is carried out in an atmosphere containing carbon dioxide.
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
100.
Polyester Carbonates on the Basis of Cycloaliphatic Diacids, 1,4:3,6-Dianhydrohexitol and Specific Amounts of an Additional Aliphatic Dihydroxy Compound
The present invention relates to a process for preparing a polyester carbonate on the basis of cycloaliphatic diacids and at least one 1,4:3,6-dianhydrohexitol and at least one additional aliphatic dihydroxy compound, to the polyester carbonate prepared according to the process and to a molding compound and a molding body containing the polyester carbonate. The process according to the invention is a direct synthesis, in which all structural elements forming the subsequent polyester carbonate are present as monomers already in the first process step. It is characterized in that a specific ratio of 1,4:3,6-dianhydrohexitol and the at least one additional aliphatic dihydroxy compound is advantageous.
