Patents by Inventor Tamotsu Kunihiro
Tamotsu Kunihiro 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: 9873757Abstract: The present invention provides a polyester polyol, preferably a plant-derived polyester polyol, suitable for a composition for polyurethane foam that contributes to the reduction of load on the environment and has a good balance of high resilience, moderate hardness, and high durability as a cushioning material for vehicle seat cushions. A polyester polyol having a hydroxyl value in the range of 15 to 100 mgKOH/g according to the present invention is produced by a condensation of raw materials comprising at least one selected from the group consisting of fatty acids having a hydroxy group and fatty acid esters having a hydroxy group with a polyhydric alcohol having an average number of functional groups of more than three but not more than eight. The raw materials contain 90% to 100% by mass of a fatty acid having a hydroxy group and a fatty acid ester having a hydroxy group in total.Type: GrantFiled: April 13, 2015Date of Patent: January 23, 2018Assignee: MITSUI CHEMICALS & SKC POLYURETHANES INC.Inventors: Tamotsu Kunihiro, Atsushi Miyata, Tomoki Tsutsui, Shinsuke Matsumoto, Kanae Morishita
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Patent number: 9382372Abstract: Disclosed are a polyol with a molecular weight distribution Mw/Mn of 4 or more, obtained by reacting a compound comprising an alkylene oxide compound (II) having a hydroxyl group in a base polyol (I) with a molecular weight of 2000 or more; and a polyol composition for a flexible polyurethane foam, comprising a polyol compound and a crosslinker, wherein the crosslinker comprises a polyol (a) with a hydroxyl value of 50 to 1100 mgKOH/g and with a primary hydroxylate ratio of 25% or more and 60% or less, which is obtained by an addition of a compound comprising alkylene oxide compound (ii) having a hydroxyl group to active hydrogen compound (i).Type: GrantFiled: August 8, 2011Date of Patent: July 5, 2016Assignee: MITSUI CHEMICALS & SKC POLYURETHANES INC.Inventors: Mikio Matsufuji, Tamotsu Kunihiro, Atsushi Miyata, Shinsuke Matsumoto, Koichi Sano, Toru Hiraide
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Publication number: 20150218301Abstract: The present invention provides a polyester polyol, preferably a plant-derived polyester polyol, suitable for a composition for polyurethane foam that contributes to the reduction of load on the environment and has a good balance of high resilience, moderate hardness, and high durability as a cushioning material for vehicle seat cushions. A polyester polyol having a hydroxyl value in the range of 15 to 100 mgKOH/g according to the present invention is produced by a condensation of raw materials comprising at least one selected from the group consisting of fatty acids having a hydroxy group and fatty acid esters having a hydroxy group with a polyhydric alcohol having an average number of functional groups of more than three but not more than eight. The raw materials contain 90% to 100% by mass of a fatty acid having a hydroxy group and a fatty acid ester having a hydroxy group in total.Type: ApplicationFiled: April 13, 2015Publication date: August 6, 2015Applicant: Mitsui Chemicals, Inc.Inventors: Tamotsu KUNIHIRO, Atsushi Miyata, Tomoki Tsutsui, Shinsuke Matsumoto, Kanae Morishita
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Publication number: 20150080488Abstract: Disclosed are a polyol with a molecular weight distribution Mw/Mn of 4 or more, obtained by reacting a compound comprising an alkylene oxide compound (II) having a hydroxyl group in a base polyol (I) with a molecular weight of 2000 or more; and a polyol composition for a flexible polyurethane foam, comprising a polyol compound and a crosslinker, wherein the crosslinker comprises a polyol (a) with a hydroxyl value of 50 to 1100 mgKOH/g and with a primary hydroxylate ratio of 25% or more and 60% or less, which is obtained by an addition of a compound comprising alkylene oxide compound (ii) having a hydroxyl group to active hydrogen compound (i).Type: ApplicationFiled: November 26, 2014Publication date: March 19, 2015Inventors: Mikio Matsufuji, Tamotsu Kunihiro, Atsushi Miyata, Shinsuke Matsumoto, Koichi Sano, Toru Hiraide
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Publication number: 20130131208Abstract: Disclosed are a polyol with a molecular weight distribution Mw/Mn of 4 or more, obtained by reacting a compound comprising an alkylene oxide compound (II) having a hydroxyl group in a base polyol (I) with a molecular weight of 2000 or more; and a polyol composition for a flexible polyurethane foam, comprising a polyol compound and a crosslinker, wherein the crosslinker comprises a polyol (a) with a hydroxyl value of 50 to 1100 mgKOH/g and with a primary hydroxylate ratio of 25% or more and 60% or less, which is obtained by an addition of a compound comprising alkylene oxide compound (ii) having a hydroxyl group to active hydrogen compound (i).Type: ApplicationFiled: August 8, 2011Publication date: May 23, 2013Applicant: Mitsui Chemicals, Inc.Inventors: Mikio Matsufuji, Tamotsu Kunihiro, Atsushi Miyata, Shinsuke Matsumoto, Koichi Sano, Toru Hiraide
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Publication number: 20110166245Abstract: The present invention provides a polyester polyol, preferably a plant-derived polyester polyol, suitable for a composition for polyurethane foam that contributes to the reduction of load on the environment and has a good balance of high resilience, moderate hardness, and high durability as a cushioning material for vehicle seat cushions. A polyester polyol having a hydroxyl value in the range of 15 to 100 mgKOH/g according to the present invention is produced by a condensation of raw materials comprising at least one selected from the group consisting of fatty acids having a hydroxy group and fatty acid esters having a hydroxy group with a polyhydric alcohol having an average number of functional groups of more than three but not more than eight. The raw materials contain 90% to 100% by mass of a fatty acid having a hydroxy group and a fatty acid ester having a hydroxy group in total.Type: ApplicationFiled: July 28, 2009Publication date: July 7, 2011Inventors: Tamotsu Kunihiro, Atsushi Miyata, Tomoki Tsutsui, Shinsuke Matsumoto, Kanae Morishita
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Publication number: 20100029860Abstract: An alkoxysilane-containing resin is produced by reacting a terminal carboxyl group-containing oligomer with an isocyanato alkoxysilane compound.Type: ApplicationFiled: January 15, 2008Publication date: February 4, 2010Applicant: MITSUI CHEMICALS, INC.Inventors: Shirou Honma, Tamotsu Kunihiro, Tsuyoshi Iwa
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Publication number: 20100022717Abstract: A terminal isocyanate group-containing polyamide resin can be produced by reacting a terminal carboxyl group-containing oligomer and a polyisocyanate compound at such a ratio that the amount of an isocyanate group exceeds that of a carboxyl group. An alkoxysilane-modified polyamide resin can be produced by reacting the terminal isocyanate group-containing polyamide resin with an alkoxysilane compound containing a secondary amine.Type: ApplicationFiled: September 7, 2007Publication date: January 28, 2010Inventors: Shirou Honma, Tamotsu Kunihiro, Tsuyoshi Iwa
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Publication number: 20090111952Abstract: A (meth)acrylate-grafted polyether polyol produced by reacting 40 to 95 parts by weight of a polyoxyalkylene polyol and 5 to 60 parts by weight of a vinyl monomer, both relative to 100 parts by weight of the sum total of the polyoxyalkylene polyol and the vinyl monomer, and 0.1 to 5 moles of an alkyl peroxide as a radical initiator per mole of the hydroxyl group in the polyoxyalkylene polyol, wherein the polyoxyalkylene polyol has a hydroxyl number of 25 mg KOH/g or less, and the vinyl monomer contains a (meth)acrylate and/or a hydroxyl-containing (meth)acrylate in an amount of 50% by weight or higher. The (meth)acrylate-grafted polyether polyol is excellent in colorless-transparency, compatibility, mechanical strength, weather resistance, and blending resistance, and therefore is useful as a raw material for a polyurethane resin cured article.Type: ApplicationFiled: August 31, 2006Publication date: April 30, 2009Inventors: Tamotsu Kunihiro, Shinsuke Matsumoto, Tsuyoshi Iwa, Kouichi Murayama
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Publication number: 20070293631Abstract: A polyether polyol grafted with hydroxyl group-containing (meth)acrylate related to the present invention has an ester group represented by formula (1) below in the molecule. (In the formula, R1 represents a hydrogen atom or a methyl group, and R2 is an alkylene group having 1 to 18 carbon atoms.) This polyether polyol is suitably used as a raw material for polyurethane resin cured products excellent in mechanical strength and weather resistance.Type: ApplicationFiled: October 20, 2005Publication date: December 20, 2007Applicant: MITSUI CHEMICALS POLYURETHANES, INC.Inventors: Tamotsu Kunihiro, Shinsuke Matsumoto, Tsuyoshi Iwa
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Publication number: 20060155096Abstract: A thermoplastic polymer compound can be obtained by allowing a compound having a bivalent organic group to react with a polyoxyalkylene diol obtained by addition-polymerization of an urea compound having a partial structure refractivity of 14 to 35 and a dipole moment of 2.5 D to 5.5 D with an alkylene oxide. A thermoplastic polymer composition comprises the thermoplastic polymer compound and an inorganic salt of an alkali metal or the like. The polymer compound and the polymer composition are useful as an antistatic agent and have excellent antistatic properties and excellent transparency.Type: ApplicationFiled: September 22, 2003Publication date: July 13, 2006Inventors: Shinsuke Matsumoto, Tamotsu Kunihiro, Hisato Itou, Takashi Kumaki
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Patent number: 6410676Abstract: The object is to provide a method for producing a polyoxyalkylene polyol and a method for producing a derivative thereof wherein the remaining catalyst compound is efficiently removed from a crude polyoxyalkylene polyol by a simple manner, and a method for producing a polyoxyalkylene polyol wherein a crude polyoxyalkylene polyol is produced by addition polymerization of an epoxide compound to an active hydrogen compound using as a catalyst a compound having a P═N bond, then, the crude polyoxyalkylene polyol is allowed to contact with a solid acid having a specific surface area of 450 to 1200 m2/g and an average pore diameter of 40 to 100 Å to control the catalyst-remaining amount in the polyoxyalkylene polyol to 150 ppm or less, and a method for producing a derivative of the-above-described polyol are provided.Type: GrantFiled: May 30, 2000Date of Patent: June 25, 2002Assignee: Mitsui chemicals, Inc.Inventors: Satoshi Yamasaki, Yasunori Hara, Tamotsu Kunihiro, Fumio Yamazaki, Mikio Matsufuji, Ariko Nishikawa, Shinsuke Matsumoto, Tsukuru Izukawa, Masahiro Isobe, Kazuhiko Ohkubo, Kaoru Ueno
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Patent number: 6156864Abstract: Propylene oxide is added to an active hydrogen compound in the presence of an alkali metal hydroxide catalyst in an amount of from 0.05 to 0.5 mole per mole of the active hydrogen compound at a reaction temperature of from 60 to 98.degree. C. at a reaction pressure less than or equal to 4 kg/cm.sup.2 to prepare a polyoxyalkylene polyol which has a hydroxyl value of from 10 to 35 mg KOH/g, a monool content less than or equal to 15 mol %, a Head-to-Tail bond selectivity greater than or equal to 96 percent, and low viscosity. A polymer polyol is prepared by polymerizing an ethylenically unsaturated monomer in the polyoxyalkylene polyol. A flexible polyurethane foam is prepared by reacting the polyoxyalkylene polyol or the polymer polyol with an organic polyisocyanate compound in the presence of a foaming agent, a catalyst, a surfactant, a crosslinking agent and other additives.Type: GrantFiled: October 30, 1997Date of Patent: December 5, 2000Assignee: Mitsui Chemicals, Inc.Inventors: Kazuhiko Ohkubo, Tomoki Tsutsui, Yoshitsugu Sakaki, Tamotsu Kunihiro, Ariko Nishikawa, Tsukuru Izukawa
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Patent number: 5916994Abstract: Propylene oxide is added to an active hydrogen compound in the presence of an alkali metal hydroxide catalyst in an amount of from 0.05 to 0.5 mole per mole of the active hydrogen compound at a reaction temperature of from 60 to 98.degree. C. at a reaction pressure less than or equal to 4 kg/cm.sup.2 to prepare a polyoxyalkylene polyol which has a hydroxyl value of from 10 to 35 mg KOH/g, a monool content less than or equal to 15 mol %, a Head-to-Tail bond selectivity greater than or equal to 96 percent, and low viscosity. A polymer polyol is prepared by polymerizing an ethylenically unsaturated monomer in the polyoxyalkylene polyol. A flexible polyurethane foam is prepared by reacting the polyoxyalkylene polyol or the polymer polyol with an organic polyisocyanate compound in the presence of a foaming agent, a catalyst, a surfactant, a crosslinking agent and other additives.Type: GrantFiled: October 30, 1997Date of Patent: June 29, 1999Assignee: Mitsui Chemicals, Inc.Inventors: Tsukuru Izukawa, Tamotsu Kunihiro, Ariko Nishikawa
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Patent number: 5777175Abstract: Propylene oxide is added to an active hydrogen compound in the presence of an alkali metal hydroxide catalyst in an amount of from 0.05 to 0.5 mole per mole of the active hydrogen compound at a reaction temperature of from 60.degree. to 98.degree. C. at a reaction pressure less than or equal to 4 kg/cm.sup.2 to prepare a polyoxyalkylene polyol which has a hydroxyl value of from 10 to 35 mg KOH/g, a monool content less than or equal to 15 mol %, a Head-to-Tail bond selectivity greater than or equal to 96 percent, and low viscosity. A polymer polyol is prepared by polymerizing an ethylenically unsaturated monomer in the polyoxyalkylene polyol. A flexible polyurethane foam is prepared by reacting the polyoxyalkylene polyol or the polymer polyol with an organic polyisocyanate compound in the presence of a foaming agent, a catalyst, a surfactant, a crosslinking agent and other additives.Type: GrantFiled: April 12, 1995Date of Patent: July 7, 1998Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Kazuhiko Ohkubo, Tomoki Tsutsui, Yoshitsugu Sakaki, Tamotsu Kunihiro, Ariko Nishikawa, Tsukuru Izukawa, Kaoru Ueno, Seijiro Sakai, Yukichi Tanaka
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Patent number: 5416123Abstract: High concentration-low viscosity polymer-polyols are prepared by polymerizing mixtures of acrylonitrile and styrene in polyols, which are free of any polymerizable carbon-carbon double bond, in the presence of alkyl-substituted tertiary amines. Without use, as a dispersion stabilizer, of organic compounds which have a polymerizable carbon-carbon double bond and terminal hydroxyl groups, there can be obtained polymer-polyols which have a concentration of the polymer of 33-60 wt % and a glass transition temperature of the polymer of 90.degree.-120.degree. C.Type: GrantFiled: April 28, 1994Date of Patent: May 16, 1995Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Ariko Nishikawa, Tamotsu Kunihiro, Tsukuru Izukawa, Kiyotsugu Asai
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Patent number: 5324774Abstract: High concentration-low viscosity polymer-polyols are prepared by polymerizing mixtures of acrylonitrile and styrene in polyols, which are free of any polymerizable carbon-carbon double bond, in the presence of alkyl-substituted tertiary mines. Without use, as a dispersion stabilizer, of organic compounds which have a polymerizable carbon-carbon double bond and terminal hydroxyl groups, there can be obtained polymer-polyols which have a concentration of the polymer of 33-60 wt % and a glass transition temperature of the polymer of 90.degree.-120.degree. C.Type: GrantFiled: October 14, 1992Date of Patent: June 28, 1994Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Ariko Nishikawa, Tamotsu Kunihiro, Tsukuru Izukawa, Kiyotsugu Asai