Patents by Inventor Kotaro Kuwata
Kotaro Kuwata has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9469701Abstract: The present invention provides a polyolefin powder including a homopolymer of ethylene or a copolymer of ethylene and an ?-olefin having 3 to 15 carbon atoms.Type: GrantFiled: November 13, 2015Date of Patent: October 18, 2016Assignee: Asahi Kasei Chemicals CorporationInventor: Kotaro Kuwata
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Publication number: 20160137760Abstract: The present invention provides a polyolefin powder including a homopolymer of ethylene or a copolymer of ethylene and an ?-olefin having 3 to 15 carbon atoms.Type: ApplicationFiled: November 13, 2015Publication date: May 19, 2016Applicant: Asahi Kasei Chemicals CorporationInventor: Kotaro Kuwata
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Publication number: 20120251728Abstract: An oil-repellent coating material composition containing: (A) an alkoxysilane, represented by the following general formula (1), having a hydrocarbon group to which at least one or more fluorine atoms are bonded; Rf[—X—Y—SiR1a(OR2)3?a]m ??(1) wherein Rf represents an alkyl group, an alkenyl group, or an aromatic hydrocarbon group, the group having at least one fluorine atom and 1 to 20 carbon atoms; X represents an oxygen atom or a divalent organic group containing an oxygen atom; Y represents a spacer group (CH(Z)—)n wherein Z is a substituent selected from a hydrogen atom, a halogen atom, or a hydrocarbon group having 1 to 3 carbon atoms, and n is of 2 to 8; R1 and R2 may be the same or different hydrocarbon group(s) having 1 to 10 carbon atoms; m is 1 or 2; and a is 0, 1, or 2); and (B) a condensation catalyst.Type: ApplicationFiled: March 28, 2012Publication date: October 4, 2012Applicant: WACKER CHEMIE AGInventor: Kotaro Kuwata
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Publication number: 20120123051Abstract: An object of the invention is to provide an adhesive silicone rubber composition which has superior adhesion to various thermoset resins, especially to polyurethane. The composition comprises of (A) a polyorganosiloxane having at least two alkenyl groups, (B) a polyorganohydrogensiloxane which has at least two hydrogen atoms bonded to silicon atoms, (C) an organosilicon compound having aromatic hydrocarbon group and alkoxy group bonded to silicon atom, (D) an organometal compound which can be catalyst for condensation reaction of (C) component, (E) a polyorganosiloxane resin, and (F) catalytic amount of hydrosilylation reaction catalyst.Type: ApplicationFiled: July 23, 2010Publication date: May 17, 2012Applicant: WACKER CHEMIE AGInventor: Kotaro Kuwata
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Patent number: 7514520Abstract: A process for producing a phosphonitrilic acid ester. The process comprises using a specific compound as a catalyst to react phosphonitrile dichloride with at least one member selected among phenol compounds and/or alcohol compounds in the presence of a reaction solvent. Alternatively, the process comprises reacting a liquid reaction mixture obtained in a first stage with at least one member selected among phenol compounds and/or alcohol compounds without isolating phosphonitrile dichloride from the mixture.Type: GrantFiled: June 3, 2004Date of Patent: April 7, 2009Assignee: Asahi Kasei Chemicals CorporationInventors: Kotaro Kuwata, Hiroji Oda
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Publication number: 20080091050Abstract: <Problem to be Solved> A process for producing a cyclic and/or linear phosphonitrilic acid ester from a cyclic and/or linear phosphonitrile dichloride is provided, wherein the reaction time is shorter and the content of monochloro phosphazenes is very small. <Solution> When phosphonitrile dichloride is reacted with a metal arylolate and/or a metal alcoholate in the presence of a reaction solvent, a metal arylolate and/or a metal alcoholate composed of at least two different metals having different ionization energies is used and also a specific compound is used as a catalyst.Type: ApplicationFiled: January 18, 2006Publication date: April 17, 2008Applicant: ASAHI KASEI CHEMICAL CORPORATIONInventors: Kotaro Kuwata, Hideki Date
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Publication number: 20070060739Abstract: A process for producing a phosphonitrilic acid ester. The process comprises using a specific compound as a catalyst to react phosphonitrile dichloride with at least one member selected among phenol compounds and/or alcohol compounds in the presence of a reaction solvent. Alternatively, the process comprises reacting a liquid reaction mixture obtained in a first stage with at least one member selected among phenol compounds and/or alcohol compounds without isolating phosphonitrile dichloride from the mixture.Type: ApplicationFiled: June 3, 2004Publication date: March 15, 2007Inventors: Kotaro Kuwata, Hiroji Oda
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Patent number: 7090813Abstract: The present invention provides a method for producing cyclic chlorophosphazene oligomers, in particular the trimer and tetramer, in a high yield and selectivity. The method for producing cyclic chlorophosphazene oligomers involves the reaction between chlorinated phosphorus and ammonium chloride in the presence of a reaction catalyst, wherein 1) moisture is present in the reaction system at a molar fraction of 5×10?3 or less based on the total moles of the chlorinated phosphorus added to the reaction system, and 2) the ammonium chloride has an average particle size of 10 ?m or less and the value of particle size distribution of 2 or more, estimated by the Rosin-Rammler equation.Type: GrantFiled: January 9, 2004Date of Patent: August 15, 2006Assignee: Asaki Kasei Chemicals CorporationInventor: Kotaro Kuwata
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Patent number: 6825264Abstract: Disclosed is a flame retardant resin composition comprising: 100 parts by weight of a resin component (A) which is a resin mixture of an aromatic polycarbonate and a styrene polymer, wherein the resin mixture has an aromatic polycarbonate content of from 50 to 95% by weight and a styrene polymer content of from 5 to 50% by weight; 0.1 to 30 parts by weight of an organopolysiloxane (B) which comprises 0 to 70 mol % of a monofunctional siloxane unit (M unit), 0 to 100 mol % of a bifunctional recurring siloxane unit (D unit), 0 to 100 mol % of a trifunctional recurring siloxane unit (T unit), and 0 to 63 mol % of a tetrafunctional recurring siloxane unit (Q unit); and 0.0005 to 5 parts by weight of at least one inorganic metal salt (C) selected from the group consisting of inorganic alkali metal salts and inorganic alkaline earth metal salts.Type: GrantFiled: October 11, 2002Date of Patent: November 30, 2004Assignees: Asahi Kasei Chemicals Corporation, Wacker-Chemie Gesellschaft mit Beschrankter HaftungInventors: Hiroji Oda, Kotaro Kuwata
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Publication number: 20040146443Abstract: The present invention provides a method for producing cyclic chlorophosphazene oligomers, in particular the trimer and tetramer, in a high yield and selectivity. The method for producing cyclic chlorophosphazene oligomers involves the reaction between chlorinated phosphorus and ammonium chloride in the presence of a reaction catalyst, wherein 1) moisture is present in the reaction system at a molar fraction of 5×10−3 or less based on the total moles of the chlorinated phosphorus added to the reaction system, and 2) the ammonium chloride has an average particle size of 10 &mgr;m or less and the value of particle size distribution of 2 or more, estimated by the Rosin-Rammler equation.Type: ApplicationFiled: January 9, 2004Publication date: July 29, 2004Inventor: Kotaro Kuwata
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Publication number: 20030109660Abstract: Disclosed is a flame retardant resin composition comprising: 100 parts by weight of a resin component (A) which is a resin mixture of an aromatic polycarbonate and a styrene polymer, wherein the resin mixture has an aromatic polycarbonate content of from 50 to 95% by weight and a styrene polymer content of from 5 to 50% by weight; 0.1 to 30 parts by weight of an organopolysiloxane (B) which comprises 0 to 70 mol % of a monofunctional siloxane unit (M unit), 0 to 100 mol % of a bifunctional recurring siloxane unit (D unit), 0 to 100 mol % of a trifunctional recurring siloxane unit (T unit), and 0 to 63 mol % of a tetrafunctional recurring siloxane unit (Q unit); and 0.0005 to 5 parts by weight of at least one inorganic metal salt (C) selected from the group consisting of inorganic alkali metal salts and inorganic alkaline earth metal salts.Type: ApplicationFiled: October 11, 2002Publication date: June 12, 2003Inventors: Hiroji Oda, Kotaro Kuwata