Patents by Inventor Katsumi Tokumoto
Katsumi Tokumoto 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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Publication number: 20190169351Abstract: To provide a catalyst composition which improves storage stability of a polyol blended liquid for producing a polyurethane foam containing a hydrohaloolefin as a blowing agent, and which starts foaming reaction quickly with a small addition amount. Further, to provide a method for producing a polyurethane foam using a polyol blended liquid containing the catalyst composition.Type: ApplicationFiled: May 16, 2017Publication date: June 6, 2019Inventors: Yusuke SESOKO, Katsumi TOKUMOTO
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Patent number: 8779018Abstract: In the present invention, a catalyst composition comprising the following amine compounds of (A) and (B) and/or (C) is used and further, a raw material-blended composition further containing a polyol component and water is used. (A) A quaternary ammonium salt represented by the following general formula (1): wherein each of R1 to R3 represents a hydrocarbon group having 1 to 12 carbon atoms, R4 represents an alkyl group or an aromatic hydrocarbon group having 1 to 18 carbon atoms, and X represents an organic acid group having an acid dissociation constant (pKa) of 4.8 or less; (B) A hydrophobic amine compound; (C) A heterocyclic tertiary amine compound.Type: GrantFiled: October 17, 2011Date of Patent: July 15, 2014Assignee: Tosoh CorporationInventors: Katsumi Tokumoto, Yutaka Tamano
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Patent number: 8513318Abstract: A method for producing a rigid polyurethane foam, which comprises reacting a polyol with a polyisocyanate in the presence of an amine catalyst and a blowing agent, wherein as the amine catalyst, at least one amine compound having at least one type of substituent selected from the group consisting of a hydroxyl group, a primary amino group and a secondary amino group in its molecule, or N-(2-dimethylaminoethyl)-N?-methylpiperazine, is used, and as the blowing agent, 1,1,1,3,3-pentafluoropropane (HFC-245fa) and/or 1,1,1,3,3-pentafluorobutane (HFC-365mfc) is used.Type: GrantFiled: September 25, 2006Date of Patent: August 20, 2013Assignee: Tosoh CorporationInventors: Hiroyuki Kiso, Katsumi Tokumoto, Yutaka Tamano
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Publication number: 20120035289Abstract: An object of the present invention is to provide a catalyst for producing a rigid polyurethane foam and an isocyanurate-modified rigid polyurethane foam excellent in storage stability in the case that water is contained as a blowing agent, and a raw material-blended composition using the same. In the present invention, a catalyst composition comprising the following amine compounds of (A) and (B) and/or (C) is used and further, a raw material-blended composition further containing a polyol component and water is used. (A) A quaternary ammonium salt represented by the following general formula (1): wherein each of R1 to R3 represents a hydrocarbon group having 1 to 12 carbon atoms, R4 represents an alkyl group or an aromatic hydrocarbon group having 1 to 18 carbon atoms, and X represents an organic acid group having an acid dissociation constant (pKa) of 4.8 or less; (B) A hydrophobic amine compound; (C) A heterocyclic tertiary amine compound.Type: ApplicationFiled: October 17, 2011Publication date: February 9, 2012Applicant: TOSOH CORPORATIONInventors: Katsumi TOKUMOTO, Yutaka Tamano
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Publication number: 20110077376Abstract: To provide a process for producing a hydroxyalkyltriethylenediamine or hydroxytriethylenediamine simply and in a small number of steps without requiring multi-stage reaction steps; a novel catalyst composition whereby a polyurethane product can be obtained with good productivity and good moldability without bringing about odor problems or environmental problems; and a process for producing a polyurethane resin using the catalyst composition. For example, a hydroxyalkyltriethylenediamine or hydroxytriethylenediamine is produced by subjecting a mono-substituted dihydroxyalkylpiperazine and/or a di-substituted hydroxyalkylpiperazine to an intramolecular dehydration condensation reaction in the presence of an acid catalyst.Type: ApplicationFiled: May 29, 2009Publication date: March 31, 2011Inventors: Katsumi Tokumoto, Takao Suzuki, Hiroyuki Kiso, Yoshihiro Takahashi, Yutaka Tamano
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Publication number: 20100113634Abstract: To provide a catalyst composition for production of a flexible or semirigid polyurethane foam excellent in air permeability, and a method for producing a polyurethane foam by using it.Type: ApplicationFiled: February 27, 2008Publication date: May 6, 2010Inventors: Katsumi Tokumoto, Yutaka Tamano
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Patent number: 7183331Abstract: A method for producing a rigid polyurethane foam, which comprises reacting a polyol with a polyisocyanate in the presence of an amine catalyst and a blowing agent, wherein as the amine catalyst, at least one amine compound having at least one type of substituent selected from the group consisting of a hydroxyl group, a primary amino group and a secondary amino group in its molecule, or N-(2-dimethylaminoethyl)-N?-methylpiperazine, is used, and as the blowing agent, 1,1,1,3,3-pentafluoropropane (HFC-245fa) and/or 1,1,1,3,3-pentafluorobutane (HFC-365mfc) is used.Type: GrantFiled: February 19, 2004Date of Patent: February 27, 2007Assignee: Tosoh CorporationInventors: Hiroyuki Kiso, Katsumi Tokumoto, Yutaka Tamano
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Publication number: 20070043132Abstract: An object of the present invention relates to a catalyst for producing rigid polyurethane foam; wherein the catalyst functions in a process for producing rigid polyurethane foam having excellent adhesive strength and flame retardancy. Another object of the present invention relates to a catalyst for producing rigid polyisocyanurate foam; wherein the catalyst functions in a process for producing rigid polyisocyanurate foam having excellent flame retardancy, adhesive strength, and dimensional stability.Type: ApplicationFiled: October 24, 2006Publication date: February 22, 2007Applicant: TOSOH CORPORATIONInventors: Hiroyuki Kiso, Katsumi Tokumoto, Yutaka Tamano
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Publication number: 20070021517Abstract: A method for producing a rigid polyurethane foam, which comprises reacting a polyol with a polyisocyanate in the presence of an amine catalyst and a blowing agent, wherein as the amine catalyst, at least one amine compound having at least one type of substituent selected from the group consisting of a hydroxyl group, a primary amino group and a secondary amino group in its molecule, or N-(2-dimethylaminoethyl)-N?-methylpiperazine, is used, and as the blowing agent, 1,1,1,3,3-pentafluoropropane (HFC-245fa) and/or 1,1,1,3,3-pentafluorobutane (HFC-365mfc) is used.Type: ApplicationFiled: September 25, 2006Publication date: January 25, 2007Applicant: TOSOH CorporationInventors: Hiroyuki Kiso, Katsumi Tokumoto, Yutaka Tamano
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Publication number: 20040162360Abstract: A method for producing a rigid polyurethane foam, which comprises reacting a polyol with a polyisocyanate in the presence of an amine catalyst and a blowing agent, wherein as the amine catalyst, at least one amine compound having at least one type of substituent selected from the group consisting of a hydroxyl group, a primary amino group and a secondary amino group in its molecule, or N-(2-dimethylaminoethyl)-N′-methylpiperazine, is used, and as the blowing agent, 1,1,1,3,3-pentafluoropropane (HFC-245fa) and/or 1,1,1,3,3-pentafluorobutane (HFC-365mfc) is used.Type: ApplicationFiled: February 19, 2004Publication date: August 19, 2004Applicant: Tosoh CorporationInventors: Hiroyuki Kiso, Katsumi Tokumoto, Yutaka Tamano
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Patent number: 6777456Abstract: A method for producing a rigid polyurethane foam, which comprises reacting a polyol with a polyisocyanate in the presence of an amine catalyst and a blowing agent, wherein as the amine catalyst, at least one amine compound having at least one type of substituent selected from the group consisting of a hydroxyl group, a primary amino group and a secondary amino group in its molecule, or N-(2-dimethylaminoethyl)-N′-methylpiperazine, is used, and as the blowing agent, 1,1,1,3,3-pentafluoropropane (HFC-245fa) and/or 1,1,1,3,3-pentafluorobutane (HFC-365mfc) is used.Type: GrantFiled: July 2, 2002Date of Patent: August 17, 2004Assignee: Tosoh CorporationInventors: Hiroyuki Kiso, Katsumi Tokumoto, Yutaka Tamano
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Publication number: 20040082465Abstract: The present invention relates to:Type: ApplicationFiled: July 15, 2003Publication date: April 29, 2004Applicant: TOSOH CORPORATIONInventors: Hiroyuki Kiso, Katsumi Tokumoto, Yutaka Tamano
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Publication number: 20030083393Abstract: A method for producing a rigid polyurethane foam, which comprises reacting a polyol with a polyisocyanate in the presence of an amine catalyst and a blowing agent, wherein as the amine catalyst, at least one amine compound having at least one type of substituent selected from the group consisting of a hydroxyl group, a primary amino group and a secondary amino group in its molecule, or N-(2-dimethylaminoethyl)-N′-methylpiperazine, is used, and as the blowing agent, 1,1,1,3,3-pentafluoropropane (HFC-245fa) and/or 1,1,1,3,3-pentafluorobutane (HFC-365mfc) is used.Type: ApplicationFiled: July 2, 2002Publication date: May 1, 2003Inventors: Hiroyuki Kiso, Katsumi Tokumoto, Yutaka Tamano
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Patent number: 6384177Abstract: An amine catalyst for production of a polyurethane and a polyisocyanurate is provided which comprises a quaternary ammonium compound represented by General Formula (1): where R1 to R6 are independently a linear or branched saturated hydrocarbon group of 1 to 4 carbon atoms; R7 and R8 are independently a linear or branched, saturated or unsaturated hydrocarbon group of 2 to 12 carbon atoms; n is a number of 0 to 3, provided that at n=o any one of R1, R2 and R3, and R5 and/or R6 may be linked together to form a heterocycle, or at n=1, 2, or 3, R5 or R6 and R4 may be linked together to form a heterocycle; A is a carbonate group or an organic acid group; and X is number of 1 to 2. The catalyst has high activity in formation of polyurethane foams and polyisocyanurate foams, having less odor, and producing foams of high fire retardance, having high curability, high retarding effect, and low corrosiveness.Type: GrantFiled: August 27, 2001Date of Patent: May 7, 2002Assignee: Tosoh CorporationInventors: Katsumi Tokumoto, Yutaka Tamano, Shuichi Okuzono
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Patent number: 6384097Abstract: An amine catalyst for production of a polyurethane and a polyisocyanurate is provided which comprises a quaternary ammonium compound represented by General Formula (1): where R1 to R6 are independently a linear or branched saturated hydrocarbon group of 1 to 4 carbon atoms; R7 and R8 are independently a linear or branched, saturated or unsaturated hydrocarbon group of 2 to 12 carbon atoms; n is a number of 0 to 3, provided that at n=0 any one of R1, R2 and R3, and R5 and/or R6 may be linked together to form a heterocycle, or at n=1, 2, or 3, R5 or R6 and R4 may be linked together to form a heterocycle; A is a carbonate group or an organic acid group; and X is number of 1 to 2. The catalyst has high activity in formation of polyurethane foams and polyisocyanurate foams, having less odor, and producing foams of high fire retardance, having high curability, high retarding effect, and low corrosiveness.Type: GrantFiled: August 27, 2001Date of Patent: May 7, 2002Assignee: Tosoh CorporationInventors: Katsumi Tokumoto, Yutaka Tamano, Shuichi Okuzono
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Publication number: 20020026078Abstract: An amine catalyst for production of a polyurethane and a polyisocyanurate is provided which comprises a quaternary ammonium compound represented by General Formula (1): 1Type: ApplicationFiled: August 27, 2001Publication date: February 28, 2002Applicant: Tosoh CorporationInventors: Katsumi Tokumoto, Yutaka Tamano, Shuichi Okuzono
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Patent number: 6307102Abstract: An amine catalyst-for production of a polyurethane and a polyisocyanurate is provided which comprises a quaternary ammonium compound represented by General Formula (1): where R1 to R6 are independently a linear or branched saturated hydrocarbon group of 1 to 4 carbon atoms; R7 and R8 are independently a linear or branched, saturated or unsaturated hydrocarbon group of 2 to 12 carbon atoms; n is a number of 0 to 3 provided that at n=o any one of R1, R2 and R3, and R5 and/or R6 may be linked together to form a heterocycle, or at n=1, 2, or 3, R5 or R6 and R4 may be linked together to form a heterocycle; A is a carbonate group or an organic acid group; and X is number of 1 to 2. The catalyst has high activity in formation of polyurethane foams and polyisocyanurate foams, having less odor, and producing foams of high fire retardance, having high curability, high retarding effect, and low corrosiveness.Type: GrantFiled: October 14, 1998Date of Patent: October 23, 2001Assignee: Tosoh CorporationInventors: Katsumi Tokumoto, Yutaka Tamano, Shuichi Okuzono