This method for producing a titanium porous body is for producing a sheet-like titanium porous body and includes: a formation step in which a dried powder layer of a starting material powder including titanium fibers and a binder powder having a mass ratio of 0.05-0.30 with respect to the titanium fibers is pressed and heated and a sheet-like molded body in which the titanium fibers are joined together by the binder is formed; a binder removal step in which the molded body is heated to 300℃-450℃ and the components originating from the binder powder within the molded body are volatilized; and a sintering step in which after the binder removal step, the molded body is heated and the titanium fibers within the molded body are sintered.
The present invention provides a solid catalyst component mixture for olefin polymerization with which an olefin polymer that exhibits both a high melt flowability and stiffness can be easily produced. Provided is a solid catalyst component mixture for olefin polymerization characterized by comprising a first solid catalyst component for olefin polymerization that contains magnesium, titanium, halogen, and a succinate diester compound and a second solid catalyst component for olefin polymerization that contains magnesium, titanium, halogen, and a phthalate diester compound in amounts such that the first solid catalyst component for olefin polymerization : second solid catalyst component for olefin polymerization mass ratio is 37 : 63 to 87 : 13.
22 and chlorine (Cl), and the peak intensity rise temperature is said to be within the range of 300-350°C in the temperature profile of HCl obtained by analysis by evolved gas analysis (EGA-MS).
In a method for manufacturing a titanium compact 1 according to the present invention, the titanium compact 1 has a hollow body part 2 in which there is formed an internal space 2b that includes an opening part 2a opening to the outside, and plate parts 3 that are provided so as to stand on an inner surface 2c of the hollow body part 2 facing the internal space 2b and that extend on the inner surface 2c. The manufacturing method includes: a step for placing a core material 61, for forming the internal space 2b, in a core material placement space in a mold 51 made of a resin; a step for filling a molding space 52 of the mold 51 with a raw material powder 71; and a step for performing cold isostatic pressing, at a pressing force of 300 MPa or above, on the mold 51 in which the molding space 52 is filled with the material powder 71, in a state in which the core material 61 is placed in the core material placement space. A core-material-constituting material having a consistency of 50 or above is used as the core material 61.
B22F 3/04 - Compacting only by applying fluid pressure
B22F 5/10 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
B33Y 70/00 - Materials specially adapted for additive manufacturing
C22C 1/04 - Making non-ferrous alloys by powder metallurgy
5.
SOLID CATALYST INGREDIENT FOR OLEFIN POLYMERIZATION, METHOD FOR PRODUCING SOLID CATALYST INGREDIENT FOR OLEFIN POLYMERIZATION, CATALYST FOR OLEFIN POLYMERIZATION, METHOD FOR PRODUCING OLEFIN POLYMER, AND OLEFIN POLYMER
Provided is a solid catalyst ingredient for olefin polymerization which contains an internal electron-donating compound that is not a phthalic acid ester and with which it is possible to easily produce an olefin polymer having excellent flowability and high rigidity and to easily produce a copolymer having a practically sufficient block percentage and flowability, with excellent copolymerization activity. The solid catalyst ingredient for olefin polymerization is characterized by including magnesium, titanium, a halogen, and a succinic acid diester compound, the content of the succinic acid diester compound in all components being 15.0 mass% or higher on solid basis and the ratio of the content (S) of the succinic acid diester compound in all the components to the content (T) of the titanium in all the components, S/T, being 0.60-1.30 by mol on solid basis, and by having a total volume of pores having a diameter of 1 μm or smaller, as determined by mercury porosimetry, of 0.3-1.0 cm3/g and a specific surface area of 200 m2/g or greater.
Provided is a catalyst for olefin polymerization which contains a solid catalyst component for olefin polymerization including an internal electron-donating compound that is not a phthalic acid ester and with which nevertheless a propylene homopolymer excellent in terms of melt flowability and moldability and having an even higher bending modulus can be easily produced. The catalyst for olefin polymerization is characterized by comprising: a solid catalyst component for olefin polymerization which includes magnesium, titanium, a halogen, and a succinic acid diester compound and in which the ratio of the total content (S) of internal electron-donating compounds comprising the succinic acid diester compound as a main component to the content (T) of the titanium, S/T, is 0.60-1.30 by mole; an organoaluminium compound; and one or more external electron-donating compounds selected from among specific aminosilane compounds.
A titanium porous body according to the present invention is sheet-shaped and has a titanium content of at least 97 mass%, an oxygen content of at least 0.9 mass% but not greater than 2.0 mass%, and a carbon content of at least 0.01 mass% but not greater than 0.06 mass%, has a thickness of 0.3 mm or less, has a porosity of at least 35% but not greater than 45%, has an irreversible deformation amount of 5.0% or less after pressurization at 65 Mpa, and has a breaking flexure of at least 0.005.
A titanium porous body according to the present invention is sheet-shaped and has a thickness of 0.3 mm or less, has a breaking flexure of at least 0.005, and at least one surface thereof has a three dimensional surface texture wherein: the arithmetic mean height Sa is not more than 2.5 µm; the maximum height Sz is not more than 30 µm; the surface texture aspect ratio Str is at least 0.93; and the arithmetic mean peak curvature Spc is not more than 4.8(1/µm).
SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION AND PRODUCTION METHOD THEREFOR, METHOD FOR PRODUCING CATALYST FOR OLEFIN POLYMERIZATION, AND METHOD FOR PRODUCING OLEFIN POLYMER
A solid catalyst component for olefin polymerization, characterized by comprising magnesium, titanium, a halogen, a carbonate compound (A) represented by general formula (1): R1-O-C(=O)-O-Z-O-R2, and an ether compound (B) having two or more ether groups, the proportion of the ether compound (B) to the sum of the carbonate compound (A) and the ether compound (B) being 33.0-80.0 mol%. This solid catalyst component for olefin polymerization includes an ether compound having two or more ether groups and the carbonate compound as internally electron-donating compounds. The solid catalyst component for olefin polymerization, when used for polymerizing an olefin, can give an olefin polymer having a moderately wide molecular-weight distribution and can have heightened polymerization activity.
This titanium porous body is shaped into a sheet form, said titanium porous body having a thickness of 0.3 mm or less and a compressive strain amount of 0.20 or less at 80 MPa compression. In a pore diameter distribution representing a pore diameter-pore volume relationship, a first peak where the peak height is the highest has a half-value width of 3.5 µm or less, and a second peak where the peak height is the second highest next to the first peak has a peak height which is 10% or less of the peak height of the first peak.
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 1/052 - Metallic powder characterised by the size or surface area of the particles characterised by a mixture of particles of different sizes or by the particle size distribution
B22F 3/035 - Press-moulding apparatus therefor with one or more of the parts thereof being pivotally mounted
H01B 1/06 - Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
H01B 1/08 - Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances oxides
This method for producing an electrodeposit is a method for producing a Ti-containing electrodeposit by means of electrolytic purification using molten salt electrolysis, the method comprising an electrodeposit step in which an electrode 3 having a negative electrode 3b and a positive electrode 3a containing a crude titanium-based material containing Ti, Al, and O and having conductivity is used in a chloride bath as a molten salt bath Bm, and a purified titanium-based material is deposited on the negative electrode 3b to obtain an electrodeposit, wherein in the electrodeposit step, the electrode 3 has a plurality of positive electrodes 3a, and the use completion time of some positive electrodes 3a among the plurality of positive electrodes 3a is shifted to the use completion time of the remaining positive electrodes 3a so that a purified titanium-based material is deposited on the negative electrode 3b.
C25C 3/28 - Electrolytic production, recovery or refining of metals by electrolysis of melts of titanium, zirconium, hafnium, tantalum or vanadium of titanium
C22B 5/04 - Dry processes by aluminium, other metals, or silicon
Provided is a method for manufacturing a titanium-containing electrodeposit with which it is possible to achieve satisfactory refinement by electrodeposition without using the Kroll method. The present invention is a method for manufacturing a titanium-containing electrodeposit including an electrodeposition step for electrodepositing a titanium-containing electrodeposit in a chloride bath Bf that is a molten salt using a negative electrode 130 and a positive electrode 120 containing a TiAlO electroconductive material that contains titanium, aluminum, and oxygen, the electrodeposition step being such that the current density of the negative electrode 130 is in the range of 0.3 A/cm2to 2.0 A/cm2 and the chloride bath Bf contains 1 mol% or more of lower titanium chloride.
C25C 3/28 - Electrolytic production, recovery or refining of metals by electrolysis of melts of titanium, zirconium, hafnium, tantalum or vanadium of titanium
A titanium porous body according to the present invention is sheet-like, and is configured such that the ratio of the electric conductivity (kS/cm) with respect to the relative density (-) thereof is 8.0 kS/cm or more, and the ratio of the air impermeability (s) with respect to the thickness (mm) thereof is 8.0 s/mm or less.
B22F 3/18 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor by using pressure rollers
Provided is an olefin polymerization solid catalyst component with which an olefin polymer having superior fluidity and high rigidity, even with a narrow molecular weight distribution, could be manufactured easily without having to apply complicated polymerization processing. The present invention provides an olefin polymerization solid catalyst component that contains magnesium, titanium, and a halogen and that also contains aromatic carboxylic acid esters and 1,3-diether compounds, as internal electron-donating compounds, the olefin polymerization solid catalyst component being characterized in that the titanium content is 0.5-2.0 mass%, the aromatic carboxylic acid ester content in the total content of the internal electron-donating compounds is 40-60 mol%, and the 1,3-diether compound content in the total content of the internal electron-donating compounds is 40-60 mol%.
Provided is a metal titanium production method for producing metal titanium through molten salt electrolysis by using a conductive material containing titanium, aluminum, and oxygen. In this metal titanium production method, a refinement process comprises: a crude electrodeposition step for obtaining a titanium-containing electrodeposit TC by performing, in a chloride bath Bf, molten salt electrolysis using an electrode that contains a TiAlO conductive material; and at least one round of a refined electrodeposition step for performing, in a chloride bath Bf, molten salt electrolysis using an electrode that contains a titanium-containing electrodeposit TC. Regarding the chloride bath Bf used in the crude electrodeposition step and the chloride bath Bf used in the refined electrodeposition step, at least one of the chloride baths Bf contains 30 mol% or more of magnesium chloride.
C25C 3/28 - Electrolytic production, recovery or refining of metals by electrolysis of melts of titanium, zirconium, hafnium, tantalum or vanadium of titanium
This titanium green compact production method produces a titanium green compact 101 that has a recessed section 102. The recessed section 102 of the titanium green compact 101 has a shape whereby, in at least one cross section that includes at least part of the central axis CC of the recessed section 102, the width changes in at least part of the central axis direction of the recessed section 102 and/or has a shape that includes a curved section and/or a bent section of the central axis Cc of the recessed section 102. The titanium green compact production method includes: a step in which a core material-constituting material is caused to flow into and fill a core material arrangement space 5a that corresponds to the recessed section 102 in a resin mold 1 and a core material 11 that has a shape corresponding to the recessed section 102 is arranged; a step in which a raw material powder is filled in a molding space 2 of the mold 1; and a step in which cold isostatic pressurization is performed at an isostatic pressure of at least 300 MPa on the mold 1 which has the raw material powder filled into the molding space 2, in a state in which the core material 11 is arranged inside the core material arrangement space 5a.
B22F 5/10 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
This production method for titanium foil includes an electrodeposition step in which a molten salt bath that includes titanium ions and a molten chloride is used to perform electrolysis at an electrode that includes an anode and a cathode, and titanium metal is deposited at an electrolysis surface of the cathode. During the electrodeposition step, the ratio of the molar concentration of titanium ions to the total molar concentration of metal ions in the molten salt bath is kept at or above 7%, the temperature of the molten salt bath is kept at or below 510°C, and, when the electrode is energized, the energization has a continuous stop time of less than 1.0 seconds, the current density is at least 0.10 A/cm2but no more than 1.0 A/cm2, and the electrodeposition time of the titanium metal onto the electrolysis surface of the cathode is no more than 120 minutes.
C25C 3/28 - Electrolytic production, recovery or refining of metals by electrolysis of melts of titanium, zirconium, hafnium, tantalum or vanadium of titanium
Provided is a method which is for manufacturing a porous metal body and by which a porous metal body, which has a suppressed variation in thickness even when a molding plate having a relatively small thickness is used multiple times, can be manufactured. This method for manufacturing a porous metal body involves performing a process multiple times, the process including: a depositing step for depositing metal powders in a dry manner on a molding plate 100, which is made of carbon and has a thickness of at most 30 mm and an area of a surface, on which metal powders are deposited, of at least 36 cm2; and a sintering step for sintering the metal powders on the molding plate 100, wherein the plurality of the processes are performed using the same molding plate 100, and at least one process among the plurality of the processes further includes, between the depositing step and the sintering step, a thickness adjusting step for adjusting the thickness of the metal powder-deposited layer on the molding plate 100 while making a surface 105 of the molding plate 100 have a flat surface shape.
SOLID CATALYTIC COMPONENT FOR OLEFIN POLYMERIZATION, METHOD FOR PRODUCING SOLID CATALYTIC COMPONENT FOR OLEFIN POLYMERIZATION, CATALYST FOR OLEFIN POLYMERIZATION, METHOD FOR PRODUCING OLEFIN POLYMER PARTICLES, AND OLEFIN POLYMER PARTICLES
C08F 4/65 - Pretreating the metal or compound covered by group before the final contacting with the metal or compound covered by group
21.
METHOD FOR PRODUCING SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, METHOD FOR PRODUCING CATALYST FOR OLEFIN POLYMERIZATION, AND METHOD FOR PRODUCING OLEFIN POLYMER
Provided is a method for producing a solid catalyst component for olefin polymerization, the method being characterized by having: a first production step for obtaining a contact product by bringing titanium tetrachloride, a magnesium compound, an internal electron-donating compound and an inert organic solvent into contact with each other; a washing step for obtaining a washed product by washing the contact product obtained in the first production step with an inert organic solvent; and a second production step for obtaining a solid catalyst component by bringing the washed product obtained in the washing step, silicon tetrachloride, an organic acid chloride or metal chloride and an inert organic solvent into contact with each other. According to the present invention, it is possible to provide a method for producing a solid catalyst component for olefin polymerization, the method enabling the yield of a catalyst capable of producing an olefin polymer having excellent stereoregularity and whose catalytic activity does not become excessively low when an olefin is polymerized using a catalyst obtained using the solid catalyst component, which contains titanium, a halogen, magnesium, an internal electron-donating compound and an alkoxy group.
C08F 10/00 - Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
C08F 4/638 - Pretreating with metals or metal-containing compounds with metals or metal-containing compounds, not provided for in a single group of groups
C08F 4/654 - Pretreating with metals or metal-containing compounds with magnesium or compounds thereof
A method of producing Mg-containing particles, according to the present invention, in which the Mg-containing particles are obtained by performing classification processing by using a centrifugal air classifier comprising a housing, a rotating body that rotates within the housing, a classification chamber located on an outer edge side of the rotating body, and a flow path that is formed at an inner surface of the housing and a top surface of the rotating body and connects the classification chamber to an upstream end part, said method comprising: a step for supplying unclassified Mg-containing particles flowing through the interior of the flow path to the classification chamber with the mean flow velocity of the unclassified Mg-containing particles that are more to the downstream side than the upstream end part in the flow path being lower than the mean flow velocity of the unclassified Mg-containing particles in the upstream end part; and a step for classifying the unclassified Mg-containing particles in the classification chamber to obtain Mg-containing particles, wherein the durability index A(%) of the unclassified Mg-containing particles obtained by expression (1) below is 85 or less. (1): A = (Z÷Y) x 100
B07B 7/083 - Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
The production method for a porous metal body according to the present invention is for producing a sheet-shaped porous metal body 4a containing titanium by heating and sintering a titanium-containing powder 4 on a molding surface 2 of a molding die 1, the method comprising: an area-setting step for setting, on the molding surface 2 of the molding die 1, an adhesion area Aa which is located on an outer periphery side of the molding surface 2, in which no release layer 3 is present, and to which the titanium-containing powder 4 adheres during sintering, and setting an easy release area Ar in which a release layer 3 is formed; a powder deposition step for, after the area-setting step, depositing the titanium-containing powder 4 on the molding surface 2 in a dry manner; and a powder-sintering step for, after the powder deposition step, heating the titanium-containing powder 4 on the molding surface 2 to a temperature of 950°C or higher, to sinter the titanium-containing powder 4 on the molding surface 2 while adhering, to the adhesion area Aa, the titanium-containing powder 4 in the adhesion area Aa.
A titanium-based porous body according to the present invention is a sheet-like titanium-based porous body containing titanium, and having a thickness of at most 0.8 mm, a porosity of 30-65%, and a maximum height Rz1 of one sheet surface of at most 30 μm, wherein the ratio (Rz2/Rz1) of the maximum height Rz2 of the other sheet surface to the maximum height Rz1 of the one sheet surface is at least 1.2, and the compressive deformation rate is at most 19%.
METHOD FOR PRODUCING SOLID CATALYST COMPONENT FOR POLYMERIZATION OF OLEFIN, SOLID CATALYST COMPONENT FOR POLYMERIZATION OF OLEFIN, CATALYST FOR POLYMERIZATION OF OLEFIN, METHOD FOR PRODUCING CATALYST FOR POLYMERIZATION OF OLEFIN AND METHOD FOR PRODUCING POLYMER OF OLEFIN
An object of the present invention is to provide a solid catalyst component for polymerization of an olefin that has a polymerization activity equivalent to or higher than that of the case using a solid catalyst component in which a phthalic acid ester compound or diether compound is used as an internal electron-donating compound, and that can produce an olefin polymer with an excellent bulk density and a low content of olefin oligomers. The present invention provides a solid catalyst component for polymerization of an olefin, obtained by sequentially performing the following steps: (i) a first step of bringing compounds selected from particular phthalic acid ester compounds (A), a magnesium compound and a halogen-containing titanium compound into contact; (ii) a second step of further bringing the first contact product obtained in the above step (i) and compounds selected from particular diether compounds (B) into contact, and then washing the obtained second contact product; and (iii) a third step of obtaining a contact product between the washed second contact product and a halogen-containing titanium compound, then washing the obtained contact product, and further bringing it into contact with particular phthalic acid ester compounds (A) and a halogen-containing titanium compound, thereby obtaining a third contact product.
C08F 4/63 - Pretreating the metal or compound covered by group before the final contacting with the metal or compound covered by group
26.
METHOD FOR PRODUCING SOLID CATALYTIC COMPONENT FOR OLEFIN POLYMERIZATION, CATALYST FOR OLEFIN POLYMERIZATION, METHOD FOR PRODUCING CATALYST FOR OLEFIN POLYMERIZATION, AND METHOD FOR PRODUCING OLEFIN POLYMER
Provided is a method for producing a solid catalytic component which is for olefin polymerization and is obtained by a production method using an organic solvent other than an aromatic hydrocarbon, and which, when provided for the polymerization of olefins, enables a polymer having excellent balanced properties such as processability or crystallinity to be produced under high polymerization activity, like a solid catalytic component for olefin polymerization produced by using an aromatic hydrocarbon. The method for producing a solid catalytic component for olefin polymerization is characterized in that a solid catalytic component for olefin polymerization is obtained by bringing dialkoxy magnesium, a tetravalent titanium halogen compound, and an internal electron-donating compound into contact with each other in an inert organic solvent containing an alicyclic hydrocarbon compound.
The present invention provides a method for producing a catalyst for olefin polymerization, said catalyst exhibiting excellent catalytic activity during the polymerization of olefins by being suppressed in decrease of polymerization activity caused by early deactivation of active sites after the formation of the catalyst, while enabling the production of an olefin polymer that has excellent tacticity. A method for producing a catalyst for olefin polymerization by bringing a solid catalyst component (A), which contains magnesium, titanium, a halogen and an internal electron-donating compound, and a specific organic aluminum compound (B), which is represented by general formula (I), into contact with each other, said method being characterized in that at least one of the solid catalyst component (A) and the organic aluminum compound (B) is brought into contact with a hydrocarbon compound in advance, said hydrocarbon compound having one or more vinyl groups.
Provided is method for producing an olefin polymerization catalyst that exhibits excellent catalytic activity during polymerization of olefins by suppressing reduction in polymerization activity caused by inactivation of an activity spot at an early stage after catalyst formation, and that enables production of an olefin polymer having excellent stereoregularity. This method is for producing an olefin polymerization catalyst by bringing in contact with each other a specific organic aluminum compound (B) represented by general formula (I) and a solid catalyst component (A) containing magnesium, titanium, a halogen, and an internal electron-donating compound, and is characterized in that at least one selected from the solid catalyst component (A) and the organic aluminum compound (B) is treated in advance so as to be brought in contact with a hydrocarbon compound having at least one vinyl group, in an organic solvent containing 30 mass% or more of at least one compound selected from saturated aliphatic hydrocarbon compounds having 20 or more carbon atoms.
C08F 4/654 - Pretreating with metals or metal-containing compounds with magnesium or compounds thereof
29.
SOLID CATALYTIC COMPONENT FOR OLEFIN POLYMERIZATION AND PRODUCTION METHOD THEREFOR, CATALYST FOR OLEFIN POLYMERIZATION AND PRODUCTION METHOD THEREFOR, AND PRODUCTION METHOD FOR OLEFIN POLYMER
Provided is a solid catalytic component that is for olefin polymerization and that, when used in olefin polymerization, allows easy formulation of an olefin polymer in which reduction in polymerization activity per unit time is suitably suppressed, improves the efficiency of drying, and quickly and significantly reduces the content ratio of residual volatile organic compounds, without using a phthalic acid ester. This solid catalytic component for olefin polymerization comprises magnesium, titanium, a halogen, and a 1,3-diether compound, and is characterized in that the proportion of the 1,3-diether compound contained in the solid catalytic component for olefin polymerization is 2.50-15.00 mass%, and the specific surface area of the solid catalytic component for olefin polymerization is at least 250 m2/g.
Provided is a solid catalyst component for olefin polymerization that makes it possible to satisfy practically satisfactory standards regarding the stereoregularity and the molecular weight distribution range of an obtained polymer, copolymerization activity, and the block ratio of an obtained polymer while achieving a good balance between these properties despite not containing any electron donor compounds other than a phthalate ester. The solid catalyst component for olefin polymerization is characterized by including magnesium, titanium, halogen, an ether carbonate compound (A), and a succinic acid diester compound (B), and by the molar ratio represented by the formula indicated below (content of the ether carbonate compound (A)/content of the succinic acid diester compound (B)) being 0.01-1.00.
A method for manufacturing a porous metal body according to the present invention is a method for manufacturing a porous metal body containing titanium, and comprises: a surface oxidization step in which a titanium-containing powder is heated at a temperature of 250°C or higher for 30 minutes or longer under an oxygen-containing atmosphere to produce a surface-oxidized powder; and a sintering step in which the surface-oxidized powder is accumulated in a dry mode and is then sintered by heating at a temperature of 950°C or higher under a pressure-reduced atmosphere or an inert atmosphere.
322; and by precipitating the molybdenum oxychloride in a recovery chamber by cooling the synthesized molybdenum oxychloride gas, the manufacturing method being characterized in that an impurity trap is provided between the reaction chamber and the recovery chamber, and impurities are removed at the impurity trap. The present invention addresses the problem of providing a high-purity molybdenum oxychloride and a manufacturing method therefor.
C23C 16/08 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition (CVD) processes characterised by the deposition of metallic material from metal halides
33.
METHOD FOR ANALYZING OXYGEN CONCENTRATION OF SPONGE TITANIUM
The present invention provides a method for analyzing the oxygen concentration of a sponge titanium, said method being capable of measuring the oxygen concentration of a sponge titanium with high accuracy. A method for analyzing the oxygen concentration of a sponge titanium, said method comprising: a preparation step wherein a dummy titanium is set within a melting device; a first melting step wherein the dummy titanium is melted within the melting device in a reduced pressure atmosphere or in an inert atmosphere after the preparation step; and a second melting step wherein a sponge titanium for analysis is melted and subsequently solidified within the melting device, while maintaining the reduced pressure atmosphere or the inert atmosphere after the first melting step, thereby obtaining a sample for analysis.
G01N 31/00 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroups; Apparatus specially adapted for such methods
111111 21111111 is the distance (mm) between adjacent pushing positions in the first pressing surface in a direction orthogonal to both the direction of extension of the first pressing surface and the pushing direction of the first pressing body.
B21B 1/02 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, billets, in which the cross-sectional form is unimportant
B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
B21B 45/00 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
A method for manufacturing a titanium material in which a titanium ingredient is caused to pass through a gap between a pair of rolls, wherein: at least one roll of the pair of rolls has a plurality of protrusions arranged so as to have a zigzag shape when the surface of the roll is viewed in plan view; the manufacturing method comprises a step in which the protrusions are pressed into the surface of the titanium ingredient, thereby forming a plurality of dimples in the surface of the titanium ingredient; the protrusions are provided with spherical pressing surfaces at the distal ends thereof; and R is within the range from 3 to 30, D is within the range from 2 to 10 and is equal to or less than h, and S is within the range from 2(R2-(R-D)2)1/2to 3(R2-(R-D)2)1/2, where h (mm) is the height of the pressing surfaces, R (mm) is the radius of curvature of the pressing surfaces of the protrusions, S (mm) is the distance between the centers of adjacent protrusions in the passage direction of the titanium ingredient, and D (mm) is the pressing amount of the protrusions. Using a processed titanium material obtained through this method makes it possible to reduce surface damage produced during hot-rolling.
B21B 1/02 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, billets, in which the cross-sectional form is unimportant
B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
B21B 45/00 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
In the present invention, a rolling roll 5 having a roll diameter of 20mm to 90mm is used to cold roll or hot roll a titanium raw material 1 to a total reduction amount of at least 1.0%, and as a result of the foregoing, strain is imparted to the surface of the titanium raw material. According to a processed titanium material obtained by this manufacturing method, surface defects generated when hot rolling is performed can be reduced.
H01B 1/02 - Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
H01B 5/00 - Non-insulated conductors or conductive bodies characterised by their form
38.
POROUS METAL BODY, LIGHTING ORNAMENT, LIGHTING DEVICE, AND METHOD OF PRODUCING POROUS METAL BODY
This porous metal body 1 has a plurality of holes 3 that are demarcated between titanium-containing fibers 2. The holes 3 include at least seven different types of holes 3 that have different sizes. The seven types of holes 3 are: a hole 3 having a projected area of more than 50 μm2up to 100 μm2; a hole 3 having a projected area of more than 100 μm2up to 500 μm2; a hole 3 having a projected area of more than 500 μm2up to 1000 μm2; a hole 3 having a projected area of more than 1000 μm2up to 5000 μm2; a hole 3 having a projected area of more than 5000 μm2up to 10000 μm2; a hole 3 having a projected area of more than 10000 μm2up to 50000 μm2; and a hole 3 having a projected area of more than 50000 μm2up to 200000 μm2.
A method for producing a green compact 61 of the present invention is a method for producing a metal green compact 61 having a concave portion 62 that includes a step of arranging a resin core material 11 having a shape corresponding to the concave portion 62 at a place in the resin mold 1 that corresponds to the concave portion 62, and then performing cold isostatic pressurization on a raw material powder filled in the mold 1.
C22C 1/04 - Making non-ferrous alloys by powder metallurgy
B30B 11/00 - Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses or tabletting presses
H01B 1/06 - Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
H01B 1/08 - Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances oxides
41.
METHOD FOR PRODUCING TITANIUM POWDER, METHOD FOR PRODUCING SPONGE TITANIUM, TITANIUM POWDER AND GAS COLLECTION DEVICE
A method for producing titanium powder according to the present invention involves a process of reducing titanium tetrachloride in a metallic reduction reactor, the method comprising: a gas collection step for collecting a powder-containing internal gas from the inner space of the metallic reduction reactor; and a powder separation step for separating, from the internal gas, titanium powder-containing powder present in the internal gas.
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 9/24 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
B22F 9/28 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from gaseous metal compounds
These particles containing a titanic acid compound include alkali metal titanate particles and a binder layer. The 50% particle size D50 of the particles containing a titanic acid compound is 40-100 μm. The content ratio of particles containing a titanic acid compound that have a minor axis d of 3 μm or less, a major axis L of 5 μm or more, and an aspect ratio (L/d) of 3 or more is 0.05 mass% or less.
Provided is a method for producing titanium sponge, the method being capable of producing a titanium sponge lump that has a large volume for the lump even at the upper end side, i.e., that has a shape approximating a column shape. The titanium sponge production method comprises a reduction step in which a titanium sponge lump is produced by maintaining molten magnesium in a reduction reaction vessel made of metal and feeding titanium tetrachloride thereinto. In the reduction step, the ratio (H2/H1) of the height H2 from the lower end of the titanium sponge lump to the upper end of the titanium sponge lump, to the height H1 from the lower end of the titanium sponge lump to the bath surface of the molten magnesium, satisfy the relationship in formula (1): H2/H1 ≤ 0.85 Formula (1).
METHOD FOR PRODUCING SOLID CATALYST INGREDIENT FOR OLEFIN POLYMERIZATION, SOLID CATALYST FOR OLEFIN POLYMERIZATION, AND METHOD FOR PRODUCING OLEFIN POLYMER
A method for producing a solid catalyst ingredient for olefin polymerization by contacting and reacting a halide of tetravalent titanium and one or more internally electron-donating compounds with a magnesium compound, the method being characterized by comprising production steps including cleaning steps, at least one of which is conducted using an inert organic solvent for cleaning which contains 1 mass ppm or more internally electron-donating compound. In the method for producing a solid catalyst ingredient for olefin polymerization according to the present invention, which includes repeatedly bringing a magnesium compound into contact with a titanium halide and/or an internally electron-donating compound at least once, the formation of fine particles can be inhibited in the cleaning performed after the contacting with the titanium halide and/or the internally electron-donating compound.
C08F 4/654 - Pretreating with metals or metal-containing compounds with magnesium or compounds thereof
C08F 4/658 - Pretreating with metals or metal-containing compounds with metals or metal-containing compounds, not provided for in a single group of groups
C08F 10/00 - Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
A method for producing metal titanium by carrying out electrolysis in a molten salt bath using a positive electrode and a negative electrode, the method comprising a titanium deposition step of depositing metal titanium on the negative electrode using, as the positive electrode, a positive electrode containing metal titanium, wherein, in the titanium deposition step, the temperature of the molten salt bath is set to 250 to 600°C inclusive and the average current density of the negative electrode until 30 minutes elapsed after the start of the titanium deposition step is kept at a value falling within the range from 0.01 to 0.09 A/cm2.
C25C 3/28 - Electrolytic production, recovery or refining of metals by electrolysis of melts of titanium, zirconium, hafnium, tantalum or vanadium of titanium
CATALYST FOR POLYMERIZATION OF OLEFINS, METHOD FOR PRODUCING CATALYST FOR POLYMERIZATION OF OLEFINS, METHOD FOR PRODUCING POLYMER OF OLEFINS, AND POLYMER OF OLEFINS
The present invention provides a catalyst for polymerization of olefins, which has excellent polymerization activity and high tacticity, and which is capable of preferably producing a polymer of olefins having a wide molecular weight distribution. A catalyst for polymerization of olefins, which is characterized by containing: a solid catalyst component that contains magnesium, titanium, a halogen and an internal electron-donating compound; an organic aluminum compound; one or more compounds that are selected from among compounds represented by general formula (I), said compounds serving as first external electron-donating compounds; and one or more compounds that are selected from among compounds represented by general formula (II) and aminosilane compounds, said compounds serving as second external electron-donating compounds. This catalyst for polymerization of olefins is also characterized by containing 1-50% by mole of the first external electron-donating compounds and 50-99% by mole of the second external electron-donating compounds in total relative to the total amount of the first external electron-donating compounds and the second external electron-donating compounds.
C08F 4/658 - Pretreating with metals or metal-containing compounds with metals or metal-containing compounds, not provided for in a single group of groups
One of the problems addressed by the present invention is to provide a metal powder that comprises metal particles in which the concentration and distribution of sulfur are controlled, and a production method therefor. The provided method for producing the metal powder comprises generating a metal chloride gas by chlorinating a metal with chlorine, and generating metal particles by reducing a gaseous metal chloride in the presence of a gas containing sulfur. The reduction is done such that the bulk concentration of sulfur in the metal particles is between 0.01 wt% and 1.0 wt%, inclusive, and such that the local concentration of sulfur at a position 4 nm from the surface of the metal particles is at least 2 at%. The bulk concentration and local concentration are estimated by using an inductively coupled plasma atomic emission spectrometer and an energy-dispersive X-ray spectroscopic analyzer provided on a scanning transmission electron microscope, respectively.
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 9/28 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from gaseous metal compounds
C22C 19/03 - Alloys based on nickel or cobalt based on nickel
48.
METHOD FOR PRODUCING TITANIUM MATERIAL FOR HOT ROLLING AND METHOD FOR PRODUCING HOT-ROLLED MATERIAL
Provided is a method for producing a titanium material for hot rolling with few surface defects in a hot-rolled titanium material, in particular, few surface defects resulting from treatment for applying plastic strain to a titanium material. The method comprises: a surface defect removing step that includes providing a plurality of inclined surfaces 20 that has an inclination angle θ of 45° or less and a height difference H of more than 0.1 mm in a plane 10 orthogonal to the longitudinal direction by treating the surface of the titanium material with at least one selected from the group consisting of cutting, grinding, and polishing; and a plastic strain applying step of applying plastic strain to the surface after the surface defect removing step.
B21B 1/02 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, billets, in which the cross-sectional form is unimportant
B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
B21B 45/06 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling of strip material
B24B 27/033 - Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
49.
OLEFIN POLYMER AND METHOD FOR PRODUCING OLEFIN POLYMER
Provided are olefin polymers having excellent lightness of weight and excellent moldability together with high rigidity and excellent flexural elasticity of the molded product. The olefin polymers are characterized by having: a propylene prepolymer in the presence of an olefin-polymerization catalyst that is a catalytic reaction product of a solid catalyst component for polymerization of olefins containing a titanium atom, a magnesium atom, a halogen atom, and an internal electron donor compound, at least one type of organic aluminum compound selected from general formula (I), and a first external electron donor compound; and a polypropylene portion comprising a polymer of propylene in the presence of the olefin-polymerization catalyst and a second external electron donor compound having higher adsorptivity to the surface of the solid olefin-polymerization catalyst than the first external electron donor compound.
C08F 4/658 - Pretreating with metals or metal-containing compounds with metals or metal-containing compounds, not provided for in a single group of groups
C08F 297/08 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins
One of the problems addressed by the present invention is to provide: a nickel powder which has a high compacted density, and a small volume reduction under high temperature treatment; and a production method therefor. The nickel powder contains nickel particles, and among the Ni-Ni bonds, Ni-OH bonds, and Ni-O bonds derived from nickel oxide on the surface of the nickel particles, the proportion of Ni-Ni bonds is at least 50%, and the thermal shrinkage rate is at most 15% at 1200°C. The proportion of Ni-Ni bonds and the thermal shrinkage rate are estimated by X-ray photoelectron spectroscopy and thermomechanical analysis, respectively.
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
B22F 9/22 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
Provided is a method with which it is possible to efficiently manufacture a metal powder having a narrow grain size distribution. This method includes an airflow classification step for performing airflow classification at a classification temperature of 35°C or less on a metal powder to which an alcohol is bonded. The classification pressure may be 0.2 MPa or higher, and the alcohol may have a steam pressure at 20°C of 18.7 hPa or higher. The alcohol-bonded metal powder may include an alcohol having a saturated adsorption amount of 40% or higher. The number-average particle diameter of the metal powder may be 200 nm or less.
B07B 7/00 - Selective separation of solid materials carried by, or dispersed in, gas currents
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
53.
POROUS TITANIUM-BASED SINTERED COMPACT, METHOD FOR MANUFACTURING SAME, AND ELECTRODE
A porous titanium-based sintered compact having a porosity of 45-65%, an average pore diameter of 5-15 µm, and a bending strength of 100 MPa or greater. Through the present invention, a porous titanium-based sintered compact can be provided which has high strength and has both good pore diameter and good porosity.
Provided are: a method for stably manufacturing metal powder without damaging or destroying manufacturing equipment; a metal chloride generator capable of performing the method; and a metal powder manufacturing system including the metal chloride generator. This metal chloride generator comprises: a chlorination furnace having a first heating furnace and a second heating furnace connected to the first heating furnace; a first heater for heating the first heating furnace; and a second heater for heating the second heating furnace. The first heating furnace has a metal-intake port for introducing a metal. The second heating furnace has a discharge port for discharging metal chloride gas species. The chlorination furnace has a first gas inlet for introducing a chlorine-containing gas, and the first gas inlet is surrounded by either the first heater or the second heater.
B22F 9/28 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from gaseous metal compounds
F27B 1/02 - Shaft or like vertical or substantially vertical furnaces with two or more shafts or chambers, e.g. multi-storey
F27D 7/02 - Supplying steam, vapour, gases, or liquids
55.
TITANIUM-BASED POROUS BODY AND METHOD FOR PRODUCING THE SAME
Provided is a titanium-based porous body that has high porosity to ensure gas permeability and water permeability required for practical use as an electrode and a filter, has a large specific surface area to ensure conductivity and a sufficient reaction site with a reaction solution or a reaction gas, thereby ensuring excellent reaction efficiency, and includes only small amount of contaminants because uses no organic substances. A titanium-based porous body having a specific porosity and a high specific surface area is obtained by dry-filling, without using a binder or the like, a titanium powder having irregular particle shape and an average particle diameter of 10-50 μm to a thickness of 4.0 × 10-1 to 1.6 mm and sintering at 800°C-1100°C.
355, which has a crystal structure that undergoes phase transition between β phase and λ phase, and has a specific surface area in the range of 1.15-1.5 m2/g.
H01L 27/105 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration including field-effect components
H01L 45/00 - Solid state devices specially adapted for rectifying, amplifying, oscillating, or switching without a potential-jump barrier or surface barrier, e.g. dielectric triodes; Ovshinsky-effect devices; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof
H01L 49/00 - Solid state devices not provided for in groups and and not provided for in any other subclass; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof
57.
POROUS TITANIUM-BASED SINTERED COMPACT, METHOD FOR MANUFACTURING SAME, AND ELECTRODE
A porous titanium-based sintered compact having a porosity of 50-75%, an average pore diameter of 23-45 µm, a specific surface area of 0.020-0.065 m2/g, and a flexural strength of 22 MPa. Through the present invention, a porous titanium-based sintered compact can be provided which has high porosity, a large specific surface area, and a large average pore diameter, and thereby has good air permeability or liquid permeability as well as high strength.
An alkali metal titanate comprising an alkali metal titanate phase and a composite oxide containing Al, Si and Na, the alkali metal titanate being characterized in that the percentage of the ratio of the number of moles of Na to the total number of moles of Na and an alkali metal X that is different from Na, i.e., ((Na/(Na+X))×100), is 50 to 100 mol% and the percentage of the ratio of the total content of Si and Al to the content of Ti, i.e., (((Si+Al)/Ti)×100), is 0.3 to 10% by mass. According to the present invention, an alkali metal titanate can be provided, in which the content of a compound having a shorter diameter d of 3 μm or less and the longer diameter L of 5 μm or more and also having an aspect ratio (L/d) of 3 or more is small.
Provided is a method for manufacturing alkoxy magnesium by intermittently adding metal magnesium a plurality of times to an alcohol in a reaction system, wherein: among the second and subsequent additions of metal magnesium to the reaction system, at least one addition that adds at least 5% by mass of the total metal magnesium to be added to the reaction system is performed after the generation speed S (liters per minute) of hydrogen produced by reaction with the alcohol resulting from the immediately previous addition of metal magnesium has increased to a maximum value and has then decreased to 45% or less of that maximum value. This method for manufacturing alkoxy magnesium makes it possible to effectively prepare alkoxy magnesium with high density, a decreased proportion of fine particles, and a narrow granularity distribution.
A molten salt electrolysis tank comprising a bipolar electrode in which the tank efficiency is increased by preventing transient currents that flow from an anode to a cathode via through holes in a graphite bipolar electrode without contributing to electrolysis in a bipolar electrode section. Molten magnesium chloride is electrolyzed to manufacture metal magnesium using a molten salt electrolysis tank that comprises an electrolysis chamber and a metal recovery chamber and that has at least one bipolar electrode made of graphite with a pore volume per electrolysis cell unit in the electrolysis chamber of 0.12 mL/g or less. Further, sponge titanium is manufactured using this metal magnesium.
C25C 3/04 - Electrolytic production, recovery or refining of metals by electrolysis of melts of magnesium
61.
METHOD FOR PRODUCING SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, OLEFIN POLYMERIZATION CATALYST, METHOD FOR PRODUCING OLEFIN POLYMERIZATION CATALYST, AND METHOD FOR PRODUCING OLEFIN POLYMER
A method for producing a solid catalyst component includes bringing a magnesium compound, a titanium halide compound, and one or more internal electron donor compounds into contact with each other to effect a reaction; washing the resulting product with a first inert organic wash solvent that does not have reactivity with the titanium halide compound, and has a solubility parameter (SP) of 8.0 to 9.0;washing the resulting intermediate product one or more times in the absence of the titanium halide compound with a second inert organic wash solvent that includes a hydrocarbon compound and does not have a reactivity with the titanium halide compound, but has a solubility parameter (SP) of more than 9.0; and washing the resulting product in the absence of the titanium halide compound with a third inert organic wash solvent that does not have reactivity with the titanium halide compound, and has a solubility parameter (SP) of less than 8.0.
C08F 4/654 - Pretreating with metals or metal-containing compounds with magnesium or compounds thereof
C08F 10/00 - Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
62.
SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION USE, METHOD FOR PRODUCING SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION USE, CATALYST FOR OLEFIN POLYMERIZATION USE, AND METHOD FOR PRODUCING OLEFIN POLYMER
Provided is a solid catalyst component for olefin polymerization use, which can have a melting point as low as lower than 160°C and can have highly-retained stereoregularity even when an α-olefin other than propylene, such as ethylene, does not coexist, and which makes it possible to produce a propylene homopolymer having an excellent melt tension under a high polymerization activity. A solid catalyst component for olefin polymerization use characterized by being produced by performing the following steps sequentially: a first step of bringing a magnesium compound, a titanium halogen compound and a first internal electron-donating compound into contact with one another to cause the reaction therebetween and then washing a resultant product; a second step of bringing a second internal electron-donating compound in an amount of 0.001 to 0.1 mole relative to 1 mole of magnesium atoms contained in the magnesium compound into contact with the product in the presence of a hydrocarbon solvent to cause the reaction therebetween and then removing the hydrocarbon solvent; a third step of washing a resultant product at least one time with an organic solvent containing a titanium halogen compound in an amount of more than 5 vol% and not more than 50 vol%; and a fourth step of washing a resultant product at least one time with an organic solvent containing no titanium halogen compound.
C08F 4/658 - Pretreating with metals or metal-containing compounds with metals or metal-containing compounds, not provided for in a single group of groups
CATALYST FOR OLEFIN POLYMERIZATION, METHOD FOR PRODUCING CATALYST FOR OLEFIN POLYMERIZATION, METHOD FOR PRODUCING OLEFIN POLYMER, AND PROPYLENE-α-OLEFIN COPOLYMER
Provided is a catalyst for olefin polymerization, which exhibits excellent polymerization activity sustainability during polymerization of α-olefins, and which enables suitable production of an α-olefin (co)polymer that has high tacticity and high MFR, while exhibiting good moldability. A catalyst for olefin polymerization, which is characterized by containing: a solid catalyst component that contains magnesium, titanium, a halogen and an internal electron-donating compound; an organic aluminum compound; and external electron-donating compounds that are composed of two kinds of alkoxysilane compounds respectively having specific structures represented by general formula (I) and general formula (II). This catalyst for olefin polymerization is also characterized by containing 51-99% by mole of the external electron-donating compound represented by general formula (I) and 1-49% by mole of the external electron-donating compound represented by general formula (II) relative to the total amount of the two external electron-donating compounds.
Provided is an alkali metal titanate which, when used as a constituent raw material for a frictional material, is excellent in terms of heat resistance and frictional force, and effectively inhibits abrasion of a counterpart material which is disposed so as to face the frictional material. This alkali metal titanate is characterized by including a sodium atom and a silicon atom, wherein the contained amount of sodium atoms is 2.0-8.5 mass%, the contained amount of silicon atoms is 0.2-2.5 mass%, and the ratio of the contained amount of alkali metals other than sodium atoms to the contained amount of sodium atoms is 0-6.
A production method for a titanium or titanium alloy green compact. The production method uses a cold isostatic press to produce a titanium or titanium alloy green compact that has a relative density of at least 80%. The production method uses a CIP mold 1 that: is 0.5–1.5 mm thick; has a mold thickness error range index α of 0–0.05, given by (maximum thickness-minimum thickness)/(maximum thickness+minimum thickness) when the thickness of the mold is measured at 10 arbitrary points in the longitudinal direction thereof; comprises a thermoplastic resin that has a compressive modulus of elasticity of 800–2,100 MPa and a Shore D hardness of 78–85; and has a powder supply port and a cavity for filling with powder.
Provided is a production method for a titanium or titanium alloy green compact. The production method makes it possible to more economically produce a titanium or titanium alloy green compact that has a highly precise outside dimension and a complex shape. A production method that uses a cold isostatic press to produce a titanium or titanium alloy green compact that has a relative density of at least 80%. The production method uses a CIP mold 1 that: is 1.0–1.8 mm thick; comprises a thermoplastic resin that has a compressive modulus of elasticity of 5–100 MPa and a Shore D hardness of 30–65; and has a powder supply port and a cavity for filling with powder.
B29C 64/106 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
B30B 11/00 - Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses or tabletting presses
B33Y 80/00 - Products made by additive manufacturing
67.
DEVICE FOR ANALYZING CHLORINE CONCENTRATION, METHOD FOR ANALYZING CHLORINE CONCENTRATION, DEVICE FOR PRODUCING TITANIUM TETRACHLORIDE, AND METHOD FOR PRODUCING SPONGE TITANIUM
Provided is a device for analyzing chlorine concentration, comprising: a measurement cell 10 for housing chlorine-containing gas; a light-emitting unit 20 provided with a LED light source 21 for irradiating the chlorine-containing gas flowing through the measurement cell 10 with UV rays; a light-receiving unit 30 for receiving the UV rays transmitted through the measurement cell 10; and a calculation unit 50 for calculating the chlorine concentration in the chlorine-containing gas on the basis of an output signal from the light-receiving unit 30.
G01N 21/33 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
Provided is a metal powder suitable for a conductive paste of an internal electrode, the metal powder being capable of improving reduction in the capacity of a capacitor associated with thinning of the internal electrode of a multi-layered ceramic capacitor. In the metal powder, the proportion, contained in the metal powder, of connected particles having an aspect ratio of 1.2 or more, a circularity of 0.675 or less, and a long diameter of three times or more the diameter of 50% of the metal powder among the connected particles formed by connecting metal particles is 500 ppm or less on a number basis.
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 9/22 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
69.
METHOD FOR PRODUCING SOLID CATALYST COMPONENT CONTAINING VANADIUM COMPOUND FOR OLEFIN POLYMERIZATION, OLEFIN POLYMERIZATION CATALYST, AND METHOD FOR PRODUCING OLEFIN POLYMER
A solid catalyst component for olefin polymerization, an olefin polymerization catalyst, and a method for producing an olefin polymer, are disclosed. A solid catalyst component for olefin polymerization includes magnesium, a halogen, titanium, vanadium, and an internal electron donor compound selected by organic acid diester. An olefin polymerization catalyst includes the disclosed solid catalyst component for olefin polymerization, an onganoaluminum promoter,and an optional external electron donor. A method for producing an olefin copolymer includes copolymerizing ethylene and propylene using the disclosed olefin polymerization catalyst.
C08F 4/654 - Pretreating with metals or metal-containing compounds with magnesium or compounds thereof
C08F 10/00 - Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
70.
METHOD FOR PRODUCING SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, CATALYST FOR OLEFIN POLYMERIZATION AND A PROCESS FOR PROPYLENE POLYMERIZATION.
A method for producing a solid catalyst for olefin (co)polymerization includes bringing into contact with each other a magnesium compound, a tetravalent titanium halide compound, an organic compound represented the following general formula (1) R1k64-k4-k)(COOR2)(COOR3) and an organic compound represented the following general formula (2) R4R5C=C (COOR6)(COOR7) wherein R1is a halogen atom or an alkyl group, R2and R3are a linear aikyl group, R4and R5are independently an atom or group selected from a hydrogen atom, halogen, a linear alkyl group, a branched alkyl group a vinyl group, a linear or branched alkenyl group, a cycloalkenyl group, an aromatic hydrocarbon group, and R6and R7 are independently a linear alkyl group, a branched alkyl group, a vinyl group, a linear or branched alkenyl group a cycloalkyl group, a cycloalkenyl group, or an aromatic hydrocarbon group.
DIALKOXY MAGNESIUM, METHOD FOR PRODUCING DIALKOXY MAGNESIUM, SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, AND METHOD FOR PRODUCING OLEFIN POLYMER
A dialkoxy magnesium which is characterized in that: the arithmetic mean roughness (Ra) of particle surfaces is 0.5 or less; and the maximum height (Rz) of particle surfaces is 2.0 or less. The present invention is able to provide a dialkoxy magnesium which has a smooth surface.
Provided is a catalyst for olefin polymerization which, even when used in homopolymerization at high temperatures, shows excellent hydrogen activity and can highly efficiently produce polymers having high stereoregularity and a high MFR and which, even when used in copolymerization at high temperatures, shows excellent hydrogen activity and copolymerization activity and can produce copolymers having excellent impact resistance. The catalyst for olefin polymerization is characterized by including, as an external electron-donating compound, a compound represented by the general formula R1R2Si(NHR3)2 (wherein R1 is a C3-12 cycloalkyl or C6-12 aromatic hydrocarbon group; R2 is a linear C1-10 alkyl or branched C3-10 alkyl group, the number of carbon atoms of R1 being larger by at least two than that of R2; and R3 is a linear C2-6 alkyl, branched C3-6 alkyl, or C3-6 cycloalkyl group).
Titanium sponge manufactured by the Kroll process, the titanium sponge characterized in that the total of the chlorine content and the magnesium content therein is 350 mass ppm and the bulk density thereof is 1.65-1.95 g/cm3. Through the present invention, it is possible to provide titanium sponge for manufacturing of a large-sized ingot in which the composition thereof can easily be controlled and problems due to chloride inclusion during smelting of a large-sized ingot by a melting method not involving compression molding do not readily occur, and a method for manufacturing the titanium sponge with high industrial efficiency.
Through the present invention, metal particles can be uniformly coated with an oxide, and oxide aggregates are prevented from forming. The method for manufacturing a metal powder according to the present invention comprises mixing a dispersion including a metal powder and a metal complex having a ligand, and water including acid or alkali, and thereby coating at least a portion of the surface of the metal powder with an oxide generated from the metal complex.
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
[Problem] To provide a nickel powder and a nickel paste that is satisfactory as an internal electrode material for an MLCC and that has excellent debinding properties and improved dispersibility and wetting properties in a low-polarity solvent, particularly dihydroterpenyl acetate. [Solution] A spherical nickel powder having a number-average diameter of 1 µm or less and a crystallite diameter d of more than 40 nm, the nickel powder characterized in that the ratio (Ib/Ia) of the absorbance Ia at 1385 cm-1 and the absorbance Ib at 1600 cm-1 measured by Fourier-transform infrared spectroscopy is 0.8 or greater, and the carbon concentration is 0.05% by mass to 2.0% by mass. Here, the crystallite diameter d is calculated using the Scherrer equation (equation 2) by X-ray diffraction measurement for the (111) face, where K is the Scherrer constant, λ is the measured X-ray wavelength, β is the half-value width, and θ is the diffraction angle.
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
C22C 19/03 - Alloys based on nickel or cobalt based on nickel
H01B 1/00 - Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
H01B 1/22 - Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
H01B 5/00 - Non-insulated conductors or conductive bodies characterised by their form
76.
LITHIUM TITANATE HAVING CONSISTENT BATTERY CHARACTERISTIC, LITHIUM ION SECONDARY BATTERY USING SAME, AND METHOD FOR PRODUCING SAME
Provided are: a lithium titanate which has a stable crystal structure, allows for almost no electric capacity loss during high speed charging and discharging of a lithium secondary battery, has a higher discharge capacity and excellent charge-discharge cycle characteristics, and is safe; an intermediate for producing lithium titanate; and methods for producing the lithium titanate and the intermediate for producing lithium titanate. The lithium titanate is produced by thermally treating a lithium titanate intermediate in an atmosphere including oxidizing gas at a temperature of 400 to 600°C, the lithium titanate intermediate having an F center value in an ESR spectrum measurement of 1.0×1015 (number/g) or greater, having no trivalent titanium, and having colors in the range of 70
H01M 4/1391 - Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M 4/485 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
77.
METHOD FOR MANUFACTURING LOW-CHLORINE TITANIUM SPONGE
The purpose of the present invention is to provide a method for manufacturing titanium sponge, in which, when titanium sponge is manufactured by the Kroll process, the average chlorine concentration of the titanium sponge is reduced by reducing the chlorine concentration near peak sections of titanium sponge lumps. The present invention is a method for manufacturing titanium sponge, in which titanium sponge lumps are produced by supplying titanium tetrachloride onto molten magnesium in a reaction vessel according to the Kroll process, the method being characterized in that at least part of the titanium sponge to be produced is produced while supply of the titanium tetrachloride is continued for a duration t from the point of time at which metal magnesium on the surface of a reaction bath has depleted and low-grade titanium chlorides have begun to dissolve in magnesium chloride. When the total mass of titanium tetrachloride supplied into the reaction vessel is MTiC14 (tons), the duration t satisfies t ≤ 0.63 × MTiC14.
C22B 5/04 - Dry processes by aluminium, other metals, or silicon
78.
SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, METHOD FOR PRODUCING SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, CATALYST FOR OLEFIN POLYMERIZATION, METHOD FOR PRODUCING OLEFIN POLYMER, METHOD FOR PRODUCING PROPYLENE COPOLYMER, AND PROPYLENE COPOLYMER
Provided is a solid catalyst component for olefin polymerization, which has extremely low adhesion caused by stickiness (tackiness) of polymer particles during polymerization of olefins, especially during a copolymerization reaction such as random copolymerization or block copolymerization of propylene and ethylene, and which is capable of producing a polymer that has excellent fluidity and good particle size distribution. This solid catalyst component for olefin polymerization is characterized by: containing titanium, magnesium, a halogen atom and an internal electron donor; having a multimodal pore volume distribution as determined by mercury intrusion porosimetry; having one or more peak tops within the pore radius range of from 0.002 μm to 1 μm and within the pore radius range of from 1 μm (exclusive) to 30 μm (inclusive), respectively; and having a ratio expressed by (pore volume V1 derived from pores within the radius range of from 0.002 μm to 1 μm)/(pore volume V2 derived from pores within the radius range of from 1 μm (exclusive) to 30 μm (inclusive)) of from 0.30 to 0.65.
[Problem] To recover a rare metal. [Solution] This method is for recovering a rare metal from a chloride residue produced when refining titanium, and comprises steps of: classifying the chloride residue into coarse particles and fine particles; and recovering the fine particles. The rare metal is at least one metal selected from Sc, V, Nb, Zr, Y, La, Ce, Pr and Nd.
C22B 3/38 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
Provided is a solid catalyst component for olefin polymerization which contains an electron-donating compound other than a phthalic acid ester, wherein, compared to when a phthalic acid ester is used as an electron-donating compound, a similar olefin polymerization activity is obtained, and a polymer obtained has a high stereo-regularity and a wide molecular weight distribution. The solid catalyst component for olefin polymerization is characterized by containing magnesium atoms, titanium atoms, halogen atoms, an ester compound (A) represented by general formula (1), and a diester compound (B) represented by general formula (2), and a ratio represented by formula (ester compound (A) content (mass%) / diester compound (B) content (mass%)) is 0.01-75.
C08F 4/654 - Pretreating with metals or metal-containing compounds with magnesium or compounds thereof
C08F 10/00 - Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
81.
ALKOXY MAGNESIUM, METHOD FOR PRODUCING ALKOXY MAGNESIUM, SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION USE, CATALYST FOR OLEFIN POLYMERIZATION USE, AND METHOD FOR PRODUCING OLEFIN POLYMER
A novel alkoxy magnesium which, when used as a constituent of a solid catalyst component for olefin polymerization use to polymerize an olefin, the formation of a fine powder can be reduced and a polymer having an excellent grain size distribution can be formed under a high polymerization activity. An alkoxy magnesium characterized by being composed of secondary particles each of which is an aggregate of primary particles having an average particle diameter of less than 1 μm, and also characterized in that the ratio expressed by (the average particle diameter of the primary particles)/(the average particle diameter of the secondary particles) is 0.1 or less, the total pore volume is 0.5 to 1 cm3/g, the specific surface area is less than 50 m2/g and the grain size distribution index (SPAN) is 1 or less.
Provided are: a metallic container or tube capable of effectively solving the problem in which impurity metals are eluted into sponge titanium from the inner walls of metal containers and/or tubes used in methods for producing sponge titanium through a reduction reaction of titanium tetrachloride and metallic magnesium; a method for producing sponge titanium; and a method for producing a titanium processed product or a titanium cast product. The metallic container or tube is used for producing sponge titanium through a reduction reaction of titanium tetrachloride and metallic magnesium, and has a titanium film on at least a part of the inner wall thereof.
Provided is a solid catalyst component for polymerization of olefins, which contains an electron-donating compound other than phthalate esters, wherein the olefin polymerization activity of the solid catalyst component, and the primary physical properties such as stereoregularity, molecular weight distribution, etc., of polymers obtained using the solid catalyst component, are the same as when phthalate esters are used as an electron-donating compound. The solid catalyst component for polymerization of olefins is characterized by including a magnesium atom, a titanium atom, a halogen atom, an ester compound (A) represented by general formula (1), and a diester compound (B) represented by general formula (2), and in that the ratio represented by a formula (contained amount (mass%) of ester compound (A)/ contained amount (mass%) of diester compound (B)) is 0.05-50.
[Problem] To provide a nickel powder suitable for use in electroconductive pastes which exhibits excellent sintering behavior and dispersibility and, as a result, can prevent delamination. [Solution] The nickel powder has a coating film comprising nickel oxide and nickel hydroxide and has an average particle diameter of 250 nm or smaller. In analysis by X-ray photoelectron spectroscopy (XPS) for the chemically bonded states of the nickel contained in the surface layer of the nickel powder, the areal proportion of the peak assigned to nickel/oxygen bonding to the whole Ni2p3/2 spectrum is 55.0-80.0%, the areal proportion of the peak assigned to nickel metal to the whole Ni2p3/2 spectrum is 5.0-15.0%, and the areal proportion of the peak assigned to nickel/hydroxy group bonding to the whole Ni2p3/2 spectrum is 5.0-40.0%. The coating film has an average thickness of 3.0-5.0 nm.
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
H01B 5/00 - Non-insulated conductors or conductive bodies characterised by their form
85.
METHOD FOR PRODUCING CATALYST FOR POLYMERIZATION OF OLEFINS
Provided is a method for producing a catalyst for polymerization of olefins in which exceptional catalytic activity is exhibited during polymerization and with which it is possible to produce a polymer having exceptional stereoregularity, melt flowability, and other such properties even when the polymerization catalyst is prepared in an inert-gas atmosphere in cases when a solid catalyst component including an electron-donating compound other than a phthalic acid ester is used. A method for producing a catalyst for polymerization of olefins, characterized in that a solid catalyst component (A) including magnesium atoms, titanium atoms, halogen atoms, and electron-donating compounds free of phthalic acid ester structures, a specific organic aluminum compound (B), and an external electron-donating compound (C) are subjected to preliminary contact treatment by contact for 30 minutes or less at a temperature of less than 15°C with no olefins present.
Provided are a nickel powder and a nickel paste which are suitable as inner electrode materials for MLCCs and have excellent binder removability and improved wettability and dispersibility with and in low-polar solvents. A spherical nickel powder in which the number average particle diameter D of primary particles is 1 μm or less. The spherical nickel powder has a sodium concentration of 0.001% by mass or less, a calcium concentration of 0.001% by mass or less and a carbon concentration of 0.05 to 2.0% by mass inclusive, has an infrared absorption peak at 1600 cm-1 as measured with a Fourier transform infrared spectrometer, can exert metallic luster when formed into a pasty form by kneading together with dihydroterpinylacetate, and has a rate of decrease in a carbon concentration of 50% or more when treated with heat at 300ºC under an inert atmosphere.
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
C22C 19/03 - Alloys based on nickel or cobalt based on nickel
H01B 1/00 - Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
H01B 1/22 - Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
H01B 5/00 - Non-insulated conductors or conductive bodies characterised by their form
87.
MOLTEN SALT ELECTROLYTIC CELL, METALLIC MAGNESIUM PRODUCTION METHOD USING SAME, AND SPONGE TITANIUM PRODUCTION METHOD
Provided are a molten salt electrolytic cell, a metallic magnesium production method, and a sponge titanium production method that further improve current efficiency, can improve the production yield of metal per unit volume of the electrolytic cell, and have excellent production efficiency. This molten salt electrolytic cell comprises a metal collection chamber and an electrolytic chamber, and comprises at least two electrolytic cell units in the electrolytic chamber. Each electrolytic cell unit includes a cathode having a prismatic space, a prismatic anode, and at least one rectangular tube-shaped bipolar electrode. The bipolar electrode is disposed in the inner space of the cathode, and the anode is disposed in the inner space of the bipolar electrode, respectively. At least a part of each flat surface forming the outside of the rectangular tube of the bipolar electrode closest to the cathode among the bipolar electrodes faces a flat surface forming the rectangular tube-shaped space of the cathode, at least a part of each flat surface forming the inside of the rectangular tube of the bipolar electrode closest to the anode among the bipolar electrodes respectively faces a flat surface forming the rectangular tube of the anode, and at least one surface of the cathode is one surface of the cathode of another electrolytic cell unit. Further provided are the metallic magnesium production method using same, and the sponge titanium production method.
Provided is a titanium slab for surface melting treatment which is used in production of a titanium material by forming a re-melted/solidified layer having a depth of d1, through surface melting treatment, on a surface of a titanium slab in an as-cast state obtained by DC slab casting in a vacuum or in an inert gas atmosphere, and performing hot rolling using the surface as a rolling surface, wherein an increase C1 in average oxygen concentration in a first region (a region between the surface and a position at d1/2) is 0.20 mass% or less, and an increase C2 in average oxygen concentration in a second region (a region between the position at d1/2 and a position at d1) is 0.05 mass% or less, with respect to the average oxygen concentration of a base material for the titanium slab, in the thickness direction of the titanium slab, and Cd (= C1 - C2) is more than 0 and not more than 0.15 mass%. The titanium slab for surface melting treatment has excellent workability in cold rolling or cold molding after hot rolling.
B22D 11/041 - Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
B21B 1/02 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, billets, in which the cross-sectional form is unimportant
B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
B22D 11/00 - Continuous casting of metals, i.e. casting in indefinite lengths
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F 1/18 - High-melting or refractory metals or alloys based thereon
89.
CONNECTION PIPE, SPONGE TITANIUM MANUFACTURING DEVICE INCLUDING CONNECTION PIPE, METHOD FOR MANUFACTURING SPONGE TITANIUM USING DEVICE, AND SPONGE TITANIUM MANUFACTURED USING METHOD
A connection pipe having long service life, whereby no breakage of a lead wire or short circuiting of a lead wire and an outer pipe occurs in a process for manufacturing and purifying sponge titanium by the Kroll process, the connection pipe being for connecting at least one reaction container used to manufacture sponge titanium and at least one recovery container for condensing and recovering magnesium chloride and magnesium separated in the reaction container, wherein the connection pipe is characterized by being configured as a double structure comprising an inner pipe and an outer pipe, and by being provided with at least one heating unit provided between the inner pipe and the outer pipe, two or more sets of lead terminals penetrating through the outer pipe and being used for electrical connection with an outer part of the connection pipe, an insulating body for sealing the lead terminals, a lead wire for electrically connecting the heating unit and the lead terminals, and a stress absorbing part provided to the outer pipe, the stress absorbing part being provided between the lead terminals.
Provided is alkali titanate in which the percentage of fibrous potassium titanate is highly reduced and for which adhesiveness is significantly reduced. This alkali titanate is characterized by: including 0.5 to 2.2 mol of potassium oxide calculated as potassium atoms, 0.05 to 1.4 mol of sodium oxide calculated as sodium atoms, and 0 to 1.4 mol of lithium oxide calculated as lithium atoms with respect to 1 mol of 6 titanic acid; having a total content of the potassium oxide calculated as potassium atoms, the sodium oxide calculated as sodium atoms, and the lithium oxide calculated as lithium atoms with respect to 1 mol of 6 titanic acid of 1.8 to 2.3 mol; and having a single phase transformation rate of 85 to 100%, a fiber rate of 0 to 10 volume%, and a moisture content of 0 to 1.0 mass%.
Provided are a titanium powder having excellent fluidity and shape retention properties, and an ingot and a sintered article obtained using the titanium powder as the starting material. The titanium powder has an average circularity of 0.815 or greater but less than 0.870, a particle diameter CV value of 22-30, and an angle of repose of 29-36˚.
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 9/04 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
B22F 9/08 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
B22F 9/10 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying using centrifugal force
B33Y 70/00 - Materials specially adapted for additive manufacturing
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B22F 3/16 - Both compacting and sintering in successive or repeated steps
92.
PRODUCTION METHOD FOR OLEFIN-POLYMERIZATION CATALYST AND PRODUCTION METHOD FOR OLEFIN POLYMER
Provided is a production method for an olefin-polymerization catalyst that, even when an electron-donating compound other than a phthalate ester is used, demonstrates excellent catalytic activity during polymerization and can produce an olefin polymer that has excellent stereoregularity and bulk density and has an excellent particle size distribution wherein fine/coarse particle content has been reduced. A production method for an olefin-polymerization catalyst, the method being characterized by having a step for bringing an olefin-polymerization solid catalytic component, a vinyl silane compound, an organic silicon compound, and an organic aluminum compound into contact in an inert organic solvent under an inert gas atmosphere in the absence of a specific vinyl compound, the olefin-polymerization solid catalytic component including a magnesium compound, a titanium halide compound, and an electron-donating compound that has a diol skeleton but does not have a phthalate ester structure, and the organic silicon compound having at least one group selected from among an alkoxy group and an amino group but not having a vinyl group. The production method is also characterized in that a cleaning treatment is not performed after the vinyl silane compound has been added to the reaction system.
Provided is an olefin-polymerization solid catalytic component that includes an electron-donating compound other than a phthalate ester, that also includes an organic silicon compound, and that, even when a polymerization catalyst is prepared therefrom under an inert gas atmosphere, demonstrates excellent catalytic activity during polymerization and can produce a polymer that has excellent stereoregularity, bulk density, and the like. An olefin-polymerization solid catalytic component that is characterized by being formed by bringing a catalytic component, which comprises a powdered solid component that is obtained by bringing a magnesium compound (a) and a titanium halide compound (b) into contact with one or more electron-donating compound (c) that does not have a phthalate ester structure and has one or more group selected from among an ester group, a carbonate group, and an ether group, into contact with a vinyl silane compound (d), the molar amount of which is 0.1-15 times the molar amount of the titanium halide compound (b) included in the catalytic component in terms of titanium atoms.
C08F 4/658 - Pretreating with metals or metal-containing compounds with metals or metal-containing compounds, not provided for in a single group of groups
C08F 10/00 - Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
94.
MANUFACTURING METHOD FOR PROPYLENE BLOCK COPOLYMER
Provided is a simple and high yield method for producing a propylene block copolymer with excellent polymerization activity as well as superior tacticity, hardness and shock resistance. Said method for manufacturing a propylene block copolymer comprises: bringing into contact a solid catalyst component containing titanium, magnesium, halogen and an inner electron-donating compound and a catalyst containing a specific organoaluminum compound and a specific outer electron-donating compound, with propylene or propylene and an alpha-olefin; and then further bringing into contact the obtained compound with an electron-donating compound.
C08F 297/06 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type
C08F 4/654 - Pretreating with metals or metal-containing compounds with magnesium or compounds thereof
95.
METAL PRODUCTION METHOD AND PRODUCTION METHOD FOR HIGH-MELTING-POINT METAL
The purpose of the present invention is to provide a method whereby metal can be efficiently produced in a metal production method using metal molten salt electrolysis. The metal production method using molten salt electrolysis is a method for producing metal using a metal molten salt electrolysis device having an electrolysis tub and an electrode pair. Electrolysis of metal molten salt in the electrolysis tub and heating of the metal molten salt by using Joule heat that is generated between the electrode pair performing electrolysis occur simultaneously. The metal molten salt electrolysis device has at least two sets of electrode pairs and is characterized by at least one set of these electrode pairs being open.
Provided is a process for simply producing, in high yield, potassium titanate which has a high single-phase content and has been highly reduced in the content of fibrous particles. The process for producing potassium titanate is characterized by comprising: a mixing step in which a titanium source obtained by mixing 0-60 mass% titanium oxide having a specific surface area of 1-2 m2/g, 40-100 mass% titanium oxide having a specific surface area of 7-200 m2/g, and 0-4.5 mass% one or more compounds selected from among titanium metal and titanium hydrides is mixed with a potassium source comprising a potassium compound; a burning step in which the source mixture obtained in the mixing step is burned at a temperature of 950-990°C; and a pulverization step in which the burned particles obtained in the burning step are pulverized by one or more means selected from among vibration mills and impact pulverizers.
Provided is a nickel powder having excellent sintering properties in a manufacturing process for laminated ceramic capacitors, and capable of preventing the occurrence of defects in laminated ceramic capacitors such as cracking in an electrode layer and separating between the electrode layer and a dielectric layer. The nickel powder contains 1.0-5.0 mass% of sulfur, and 50% of particles therein have a size of less than or equal to 0.09 µm.
B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
B22F 9/08 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
B22F 9/22 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
B22F 9/24 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
C22C 19/03 - Alloys based on nickel or cobalt based on nickel
98.
SOLID CATALYST COMPONENT FOR USE IN POLYMERIZATION OF OLEFINS, METHOD FOR PRODUCING SAME, CATALYST FOR USE IN POLYMERIZATION OF OLEFINS, AND METHOD FOR PRODUCING OLEFIN POLYMER
The homo-polymerization of propylene is carried out in the presence of a catalyst comprising a solid catalyst component (I), wherein the solid catalyst component (I) comprises titanium, magnesium, a halogen, a carbonate compound represented by the formula: R1-O-C(=O)-O-Z-O-R2 (1) (wherein R1 and R2 independently represent a hydrocarbon group or a substituted hydrocarbon group each having 1 to 24 carbon atoms or a group containing a hetero atom and may be the same as or different from each other; and Z represents a bondable group that can be bonded through a carbon atom or a carbon chain) and a diether compound. In this case, the catalyst can exhibit high stereoregularity and highly active catalytic performance, has good hydrogen responsiveness, and exhibits excellent polymerization behavior in random copolymerization or block copolymerization.
C08F 4/654 - Pretreating with metals or metal-containing compounds with magnesium or compounds thereof
C08F 10/00 - Homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
C08F 297/08 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins
Provided is a method for simply producing potassium titanate at low cost, said potassium titanate having high thermal stability and a significantly reduced fibrous content. A method for producing potassium titanate, which is characterized in that: a starting material mixture, which contains a titanium compound and a potassium compound so that the molar ratio expressed by (the number of moles of the titanium compound in terms of titanium atoms)/(the number of moles of the potassium compound in terms of potassium atoms) is 2.7-3.3, is heated and calcined so that the heating rate from 1,000°C to the highest calcination temperature is 15°C/min or less when the starting material mixture is heated to the highest calcination temperature that is higher than 1,000°C; after that the resulting product is cooled so that the cooling rate from the highest calcination temperature to 500°C is 100°C/min or more; and the thus-obtained cooled product is pulverized.
[Problem] To provide a technique for manufacturing a high-titanium-content feedstock by efficiently separating out and removing metal impurities from a titanium-containing feedstock such as titanium slag or ilmenite. [Solution] A method for improving the quality of a titanium-containing feedstock. In said method, impurities in a titanium-containing feedstock that contains slag are selectively separated out and removed as chlorides, yielding a high-titanium-content feedstock. Said method is characterized in that the titanium-containing feedstock is subjected to an oxidation treatment prior to selective chlorination. Also, in this method, the oxidation treatment and the selective-chlorination treatment are performed simultaneously.
patents
