TOHO TITANIUM CO., LTD. Patent applications |
Patent application number | Title | Published |
20160016812 | METHOD FOR TREATING TITANIUM-CONTAINING FEEDSTOCK - A method for producing titanium tetrachloride is provided, in which valuable materials such as unreacted titanium-containing raw material, carbon raw material and chlorine can be recovered from solid recovered material generated in chlorinating process of titanium-containing raw material, and titanium-containing raw material can be efficiently used. The treatment method of titanium-containing raw material includes the steps: separating and removing impurities selectively from the titanium-containing raw material as chlorides so as to obtain high titanium-containing raw material, producing titanium tetrachloride using the high titanium-containing raw material, and performing separating process of impurities from solid recovered material byproduced in the production of titanium tetrachloride, together with selective chlorinating treatment of the titanium-containing raw material. Thus, the high titanium-containing raw material can be produced while recovering chlorine and impure oxides. | 01-21-2016 |
20150240011 | PRODUCTION METHOD FOR SOLID CATALYST COMPONENT FOR POLYMERIZING OLEFINS, CATALYST FOR POLYMERIZING OLEFINS, AND PRODUCTION METHOD FOR POLYMERIZED OLEFINS - A method produces a novel solid catalyst component for olefin polymerization that achieves excellent olefin polymerization activity and activity with respect to hydrogen during polymerization, and can produce an olefin polymer that exhibits a high MFR, high stereoregularity, and excellent rigidity. The method includes a first step that brings a magnesium compound, a tetravalent titanium halide compound, and one or more first internal electron donor compounds into contact with each other to effect a reaction, followed by washing; a second step that brings one or more second internal electron donor compounds into contact with a product obtained by the first step to effect a reaction; and a third step that brings a tetravalent titanium halide compound and one or more third internal electron donor compounds into contact with a product obtained by the second step to effect a reaction. | 08-27-2015 |
20150240003 | SOLID CATALYST COMPONENT FOR POLYMERIZING OLEFINS, CATALYST FOR POLYMERIZING OLEFINS, AND PRODUCTION METHOD FOR POLYMERIZED OLEFINS - A solid catalyst component for olefin polymerization includes titanium, magnesium, a halogen, a compound represented by (R | 08-27-2015 |
20150240002 | PRODUCTION METHOD FOR SOLID CATALYST COMPONENT FOR POLYMERIZING OLEFINS, CATALYST FOR POLYMERIZING OLEFINS, AND PRODUCTION METHOD FOR POLYMERIZED OLEFINS - A method for producing a solid catalyst component for olefin polymerization produces a novel solid catalyst component for olefin polymerization that achieves excellent olefin polymerization activity and activity with respect to hydrogen during polymerization, and can produce an olefin polymer that exhibits a high MFR, high stereoregularity, and excellent rigidity. The method includes a first step that brings a magnesium compound, a tetravalent titanium halide compound, and one or more first internal electron donor compounds excluding an aromatic dicarboxylic acid diester into contact with each other to effect a reaction, followed by washing; a second step that brings a tetravalent titanium halide compound and one or more second internal electron donor compounds into contact with a product obtained by the first step to effect a reaction, followed by washing; and a third step that brings one or more third internal electron donor compounds into contact with a product obtained by the second step to effect a reaction. | 08-27-2015 |
20150240001 | SOLID CATALYST COMPONENT FOR POLYMERIZATION OF OLEFINS, CATALYST FOR POLYMERIZATION OF OLEFINS, AND METHOD FOR PRODUCING OLEFIN POLYMER - A solid catalyst component for olefin polymerization makes it possible to polymerize an olefin with high polymerization activity when used for an olefin polymerization catalyst, and produce an olefin polymer having a low fine powder content, a low coarse powder content, and a low volatile organic compound (VOC) content in high yield. The solid catalyst component for olefin polymerization is produced by suspending (a) a dialkoxymagnesium, and (b) at least one alcohol selected from ethanol, n-propanol, n-butanol, isopropanol, isobutanol, and t-butanol, in an inert organic solvent so that the total amount of the alcohol is 0.5 to 1.5 parts by mass based on 100 parts by mass of the dialkoxymagnesium, to prepare a suspension, and bringing (c) an internal electron donor and (d) a titanium halide compound into contact with the suspension. | 08-27-2015 |
20150099197 | LITHIUM-LANTHANUM-TITANIUM OXIDE SINTERED MATERIAL, SOLID ELECTROLYTE CONTAINING THE OXIDE, AND LITHIUM AIR BATTERY AND ALL-SOLID LITHIUM BATTERY INCLUDING THE SOLID ELECTROLYTE - A lithium-lanthanum-titanium oxide sintered material has a lithium ion conductivity 3.0×10 | 04-09-2015 |
20140343237 | SOLID CATALYST COMPONENT FOR POLYMERIZATION OF OLEFIN, CATALYST FOR POLYMERIZATION OF OLEFIN, AND METHOD FOR PRODUCING OLEFIN POLYMER - A solid catalyst component for olefin polymerization includes titanium, magnesium, a halogen, and a compound represented by the following formula (1): R | 11-20-2014 |
20140221583 | SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, CATALYST FOR OLEFIN POLYMERIZATION, AND METHOD FOR PRODUCING OLEFIN POLYMER - An olefin polymer that is obtained using an olefin polymerization catalyst that includes a solid catalyst component for olefin polymerization that includes titanium, magnesium, a halogen, and an ester compound (A) represented by the following formula (1): R | 08-07-2014 |
20140208816 | APPARATUS FOR CORRECTING DEFORMATION OF REACTION VESSEL AND METHOD FOR CORRECTING DEFORMATION THEREFOR - For aging deformation of a reaction vessel used for production of titanium sponge by the Kroll method, the deformation of the reaction vessel can be corrected to a desired deformation. The apparatus for correcting the deformation corrects by being inserted inside of the cylindrical deformation of the reaction vessel, the apparatus has multiple cylinder arms radially extendable to a circumference, a deformation-correcting head arranged on a top part of the cylinder arm, a hydraulic power unit connected to the cylinder arm and driving the deformation-correcting head, a detecting means for the stroke of the deformation-correcting head, and a measuring means for the pressing force against the reaction vessel. Furthermore, the method for correcting the deformation of the reaction vessel using the apparatus has a step of pressing the reaction vessel while adjusting stroke of the deformation-correcting head depending on an amount of deformation of the reaction vessel. | 07-31-2014 |
20140206827 | METHOD FOR PRODUCING SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, CATALYST FOR OLEFIN POLYMERIZATION, AND METHOD FOR PRODUCING OLEFIN POLYMER - A method for producing a solid catalyst component for olefin polymerization includes bringing a magnesium compound, a tetravalent titanium halide compound, and an electron donor compound represented by a general formula (1) into contact with each other, reacting the mixture, washing the resulting reaction product to obtain a solid component, bringing the solid component, a tetravalent titanium halide compound, and an electron donor compound represented by a general formula (2) into contact with each other, reacting the mixture, and washing the resulting reaction product. | 07-24-2014 |
20140135205 | SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, AND CATALYST - A solid catalyst component for olefin polymerization and a catalyst are disclosed that exhibit high catalytic activity when used for gas-phase polymerization, suppress rapid reactions in the initial stage of polymerization relative to the polymerization activity, and can produce a propylene polymer in high yield while maintaining high stereoregularity. The solid catalyst component for olefin polymerization includes magnesium, titanium, a halogen, and an internal electron donor, the solid catalyst component including an asymmetrical phthalic diester represented by the following general formula (1) in a molar ratio of 0.2 to 0.8 relative to the total content of the internal electron donor. | 05-15-2014 |
20140044584 | Alpha + beta or beta TITANIUM ALLOY AND METHOD FOR PRODUCTION THEREOF - A titanium alloy containing copper, which cannot be realized by a conventional method, is provided, having a composition in which copper is contained in titanium with no segregation, and having improved strength and hardness. In addition a method is also provided, in which the titanium alloy is produced at lower cost than in a conventional method. The α+β or β titanium alloy contains copper at 1 to 10 mass %, has a crystal phase of β and α phase or of β phase, is formed of crystal particles not more than 100 μm, and has a copper concentration per an arbitrary specified 1 mm | 02-13-2014 |
20130327493 | MELTING FURNACE FOR PRODUCING METAL - In production of a reactive metal using a melting furnace for producing metal having a hearth, ingots can be efficiently produced by efficiently cooling the ingots extracted from the mold provided in the melting furnace. In addition, an apparatus structure in which multiple ingots can be produced with high efficiency and high quality from one hearth, is provided. A melting furnace for producing metal is provided, the furnace has a hearth for having molten metal formed by melting raw material, a mold in which the molten metal is poured, an extracting jig which is provided below the mold for extracting ingot cooled and solidified downwardly, a cooling member for cooling the ingot extracted downwardly of the mold, and an outer case for keeping the hearth, the mold, the extracting jig, and the cooling member separated from the air, wherein at least one mold and extracting jig are provided in the outer case, and the cooling member is provided between the outer case and the ingot, or between the multiple ingots. | 12-12-2013 |
20130280896 | APPARATUS FOR PRODUCING POLYCRYSTALLINE SILICON AND METHOD THEREFOR - To provide an apparatus for producing polycrystalline silicon and a method therefor to allow improvement in efficiency of polycrystalline silicon production by minimizing reactor downtime and to allow polycrystalline silicon production at a relatively low cost and in a large amount in a zinc reduction process for recovering formed silicon in a solid state. In a silicon producing apparatus for producing polycrystalline silicon by reducing silicon tetrachloride with zinc, vertical reactor | 10-24-2013 |
20130247998 | METHOD FOR FEEDING ZINC GAS AND APPARATUS THEREFOR - To provide a method and an apparatus for feeding a zinc gas superheated to a boiling point of zinc or higher at a controlled rate of feed. The method for feeding the zinc gas according to the invention includes a step for introducing melt zinc into a zinc gas evaporation apparatus, a step for generating the zinc gas from the melt zinc by inputting electric power corresponding to a rate of feed of the zinc gas to allow zinc to cause self-heating by high-frequency induction heating, a step for introducing the generated zinc gas into a gas heating apparatus, and a step for heating the zinc gas by resistance heating to form a superheated zinc gas. An apparatus for feeding the zinc gas according to the invention is applied to the method, and includes a zinc gas evaporation apparatus, a gas heating apparatus and a control apparatus. | 09-26-2013 |
20130092589 | MELT CONTAINER - An object of the invention is to provide a container for holding a melt of a metal and/or a melt of a metal salt, in which a melt container allows keeping a small amount of heat radiation of the melt, suppressing penetration of the melt and development of breakage or cracking to the minimum, holding the melt suitably, and also preventing the melt from impurity contamination. The melt container of the invention is a container for holding the melt of the metal and/or the melt of the metal salt, and has, sequentially from inside of the container, a first layer constituted of a refractory having an apparent porosity of 12% or less, a second layer constituted of a refractory having a thermal conductivity (at 800° C.) of 4 W/m·K or less, and a third layer constituted of a refractory having a higher thermal conductivity than thermal conductivity of the second layer. | 04-18-2013 |
20130071283 | TITANIUM ALLOY COMPLEX POWDER CONTAINING CERAMIC AND PROCESS FOR PRODUCTION THEREOF, CONSOLIDATED TITANIUM ALLOY MATERIAL USING THIS POWDER AND PROCESS FOR PRODUCTION THEREOF - Titanium alloy complex powder is yielded by hydrogenating titanium alloy raw material to generate hydrogenated titanium alloy, grinding and sifting it to obtain hydrogenated titanium alloy powder, adding ceramic powder selected from SiC, TiC, SiO | 03-21-2013 |
20120251426 | Polycrystalline Silicon For Solar Cell And Preparation Method Thereof - The present invention provides a process for preparing a polycrystalline silicon having the surface layer in which the areas having a short carrier lifetime due to Fe has been substantially eliminated. A preparation method of polycrystalline silicon comprising preparing a mold evenly applied with a mold release agent produced by mixing a binder and a solvent with a silicon nitride powder and then solidifying a molten silicon in said mold, wherein x≦5.0, 20≦y≦100 and x×y≦100 are satisfied given that x represents a concentration of Fe (atomic ppm) contained as impurity in the silicon nitride powder and y represents a thickness of the mold release agent (μm) applied to the mold. | 10-04-2012 |
20120004378 | SOLID CATALYST COMPONENT AND CATALYST FOR POLYMERIZATION OF OLEFINS, AND PROCESS FOR PRODUCTION OF OLEFIN POLYMERS USING SAME - A solid catalyst component for olefin polymerization is produced by causing (a) a solid component that includes magnesium, titanium, a halogen, and an electron donor, (b) an aminosilane compound shown by the following general formula (1), and (c) at least one organosilicon compound selected from an organosilicon compound shown by the following general formula (2-A) and an organosilicon compound shown by the following general formula (2-B) to come in contact with each other. A polymer having high stereoregularity is produced in high yield while achieving a high melt flow rate due to hydrogen by polymerizing an olefin in the presence of a catalyst that includes the solid catalyst component. | 01-05-2012 |
20110269926 | SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, MANUFACTURING METHOD, AND CATALYST AND OLEFIN POLYMER MANUFACTURING METHOD - A solid catalyst component for olefin polymerization includes a solid component obtained by causing a magnesium compound (a), a titanium halide compound (b), and an electron donor compound (c) to come in contact with each other, the titanium compound in an amount equivalent to a titanium content of 0.2 to 2.5 wt % in the solid catalyst component being washed away from the solid catalyst component by washing with heptane. A granular or spherical polymer that has high stereoregularity and a narrow particle size distribution can be obtained in high yield while suppressing production of a fine powder by polymerizing an olefin using a catalyst that includes the solid catalyst component. | 11-03-2011 |
20110158885 | HIGH PURITY CRYSTALLINE SILICON, HIGH PURITY SILICON TETRACHLORIDE AND PROCESSES FOR PRODUCING THE SAME - An object of the present invention is to provide more inexpensive high purity crystalline silicon which can satisfy not only a quality required to a raw material of silicon for a solar cell but also a part of a quality required to silicon for an up-to-date semiconductor and a production process for the same and provide high purity silicon tetrachloride used for production of high purity crystalline silicon and a production process for the same. The high purity crystalline silicon of the present invention has a boron content of 0.015 ppmw or less and a zinc content of 50 to 1000 ppbw. The production process for high purity crystalline silicon according to the present invention is characterized by that a silicon tetrachloride gas and a zinc gas are supplied to a vertical reactor to react them at 800 to 1200° C., whereby crude crystalline silicon is formed at a chip part of a silicon tetrachloride gas-supplying nozzle, and the crude crystalline silicon is grown downward from the chip part of the silicon tetrachloride gas-supplying nozzle; the grown crude crystalline silicon is discharged to an outside of the reactor, and the discharged crude crystalline silicon is subjected to acid treatment. | 06-30-2011 |
20110142742 | METHOD FOR PURIFICATION OF SILICON TETRACHLORIDE - An object of the present invention is to provide a method for purification of silicon tetrachloride which solves the problems of separating and removing organic chlorosilanes by distillation or adsorption. | 06-16-2011 |
20100190938 | CATALYST COMPONENT, CATALYST FOR OLEFIN POLYMERIZATION, AND PROCESS FOR PRODUCING OLEFIN POLYMER USING CATALYST - A polymer exhibiting high catalytic activity, good hydrogen response and high three-dimensional regularity can be obtained with high yield by polymerizing an olefin in the presence of a catalyst for olefin polymerization which is composed of a solid catalyst component (A) containing magnesium, titanium, a halogen and an electron-donating compound, an organic aluminum compound (B) represented by the following general formula: R | 07-29-2010 |
20100028253 | TITANIUM DIOXIDE POWDER AND METHOD FOR PRODUCTION THEREOF - A titanium dioxide powder which has a rutile content of 80% or more and a BET surface area of 30 m | 02-04-2010 |