Patents by Inventor Chitoshi Suzuki
Chitoshi Suzuki 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: 8084562Abstract: To provide a method for producing a polymer-dispersed polyol which has high compatibility with a polyol for rigid polyurethane foams and is excellent in storage stability and which provides good heat-insulating performance when it is formed into a rigid polyurethane foam. Also a method for producing a polymer-dispersed polyol for rigid polyurethane foams, having polymer particles dispersed in a polyol, which comprises polymerizing a monomer having a polymerizable unsaturated group in a polyol (X), wherein the polyol (X) contains a polyether polyol (Y) having an oxyethylene group content of at least 10 mass %, and the monomer having a polymerizable unsaturated group contains a fluorinated acrylate or a fluorinated methacrylate.Type: GrantFiled: May 20, 2009Date of Patent: December 27, 2011Assignee: Asahi Glass Company, LimitedInventors: Teruhiko Yasuda, Hisashi Sato, Hiroshi Wada, Yasuhito Adachi, Tomohiro Hayashi, Chitoshi Suzuki
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Publication number: 20100324230Abstract: A hydroxy compound is provided whereby a polyurethane excellent in elongation property can be produced. A hydroxy compound represented by the formula B-Am, wherein A is a univalent group which has a terminal hydroxy group and a carbonate chain composed of an ether unit produced by ring-opening of a monoepoxide and a carbonyloxy unit [—OC(O)—] linked to each other, and B is a m-valent residue produced by removing all hydroxy groups from a polycarbonate having m hydroxy groups at the terminals, provided that —O—R— in the repeating unit [—OC(O)—O—R—] of the polycarbonate is an ether unit other than an ether unit produced by ring-opening of a monoepoxide.Type: ApplicationFiled: August 31, 2010Publication date: December 23, 2010Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Yasuyuki SASAO, Chitoshi Suzuki, Tomeyoshi Ohori
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Patent number: 7786251Abstract: To provide a process for producing a polyester ether poly- or mono-ol having a narrow molecular weight distribution, which is obtained by copolymerizing an initiator having hydroxyl groups with a cyclic ester compound and an alkylene oxide. It is possible to produce a polyester ether poly- or mono-ol having a molecular distribution (Mw/Mn) of from 1.02 to 1.4 by copolymerizing a cyclic ester compound which carbon number is from 3 to 9 and an alkylene oxide which carbon number is from 2 to 20 with an initiator having from 1 to 12 hydroxyl groups and having a number average molecular weight (Mn) of from 18 to 20,000 in the presence of a double-metal cyanide complex catalyst is having tert-butyl alcohol as at least a part of an organic ligand.Type: GrantFiled: February 15, 2008Date of Patent: August 31, 2010Assignee: Asahi Glass Company, LimitedInventors: Shigeki Uemori, Shigeru Ikai, Chitoshi Suzuki
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Patent number: 7759403Abstract: To provide a flexible polyurethane foam having good vibration characteristics and suitable particularly for a seat for an automobile. A flexible polyurethane foam obtainable by reacting a polyol composition with a polyisocyanate compound in the presence of a catalyst, a blowing agent and a foam stabilizer, characterized in that the polyol composition comprises a high molecular weight polyoxyalkylene polyol (A1) and a polymer-dispersed polyol (A2) containing fine polymer particles in the high molecular weight polyoxyalkylene polyol (A1), and at least part of the fine polymer particles contained in the polymer-dispersed polyol (A2) are fine polymer particles having silicon atoms.Type: GrantFiled: November 26, 2007Date of Patent: July 20, 2010Assignee: Asahi Glass Company, LimitedInventors: Takayuki Sasaki, Takashi Ito, Chitoshi Suzuki, Tomohiro Hayashi
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Publication number: 20100096768Abstract: To provide a process for producing a flexible polyurethane foam having a higher biomass degree than a conventional flexible polyurethane foam and excellent in foam physical properties and its appearance. A polymer-dispersed polyol obtained by polymerizing a vinyl monomer in the presence of the following polyol (a1) derived from a natural fat/oil and/or the following polyoxyalkylene polyol (a2) is used: Polyol (a1) derived from a natural fat/oil: a polyol derived from a natural fat/oil, which is obtained by providing a natural fat/oil with hydroxy groups by chemical reaction, and which has a hydroxy value of from 20 to 250 mgKOH/g and a molecular weight distribution of at least 1.Type: ApplicationFiled: December 22, 2009Publication date: April 22, 2010Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Takayuki SASAKI, Yasuyuki Sasao, Naohiro Kumagai, Chitoshi Suzuki, Shigeru Ikai
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Patent number: 7635724Abstract: To provide a flexible polyurethane foam having good vibration characteristics and suitable particularly for a seat for an automobile. A flexible polyurethane foam obtained by reacting a polyol composition with a polyisocyanate compound in the presence of a catalyst, a blowing agent and a foam stabilizer, characterized in that the polyol composition comprises a high molecular weight polyoxyalkylene polyol (A) and a polymer-dispersed polyol (C) containing fine polymer particles in a high molecular weight polyoxyalkylene polyol (B), and at least part of the fine polymer particles are fine polymer particles obtained by polymerizing a monomer containing a fluorinated acrylate or a fluorinated methacrylate.Type: GrantFiled: November 26, 2007Date of Patent: December 22, 2009Assignee: Asahi Glass Company, LimitedInventors: Takayuki Sasaki, Takashi Ito, Chitoshi Suzuki, Tomohiro Hayashi
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Publication number: 20090239964Abstract: To provide a process for producing a flexible polyurethane foam, which can suitably form a flexible polyurethane foam having a good cushioning characteristic by using a raw material derived from a natural fat/oil. The process comprises a step of reacting a polyoxyalkylene polyol (A) containing the first polyoxyalkylene polyol (A1) obtained by ring-opening polymerization of an alkylene oxide (c) with an initiator (b) in the presence of a polymerization catalyst (a), with a polyisocyanate compound (B) in the presence of a catalyst (C) and a blowing agent (D).Type: ApplicationFiled: March 27, 2009Publication date: September 24, 2009Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Takayuki SASAKI, Naohiro Kumagai, Yasuyuki Sasao, Shigeru Ikai, Chitoshi Suzuki
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Publication number: 20090227696Abstract: To provide a method for producing a polymer-dispersed polyol which has high compatibility with a polyol for rigid polyurethane foams and is excellent in storage stability and which provides good heat-insulating performance when it is formed into a rigid polyurethane foam. A method for producing a polymer-dispersed polyol for rigid polyurethane foams, having polymer particles dispersed in a polyol, which comprises polymerizing a monomer having a polymerizable unsaturated group in a polyol (X), wherein the polyol (X) contains a polyether polyol (Y) having an oxyethylene group content of at least 10 mass %, and the monomer having a polymerizable unsaturated group contains a fluorinated acrylate or a fluorinated methacrylate.Type: ApplicationFiled: May 20, 2009Publication date: September 10, 2009Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Teruhiko YASUDA, Hisashi Sato, Hiroshi Wada, Yasuhito Adachi, Tomohiro Hayashi, Chitoshi Suzuki
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Publication number: 20090215935Abstract: To provide a polyether polyol composition, whereby the reaction rate with a polyisocyanate can be controlled, and an isocyanate group-terminated prepolymer excellent particularly in storage stability can be given. A polyether polyol composition comprising a polyether polyol obtained by ring-opening polymerization of an alkylene oxide in the presence of a composite metal cyanide complex catalyst, and a phosphoric acid compound comprising a phosphoric acid selected from orthophosphoric acid, polyphosphoric acid and polymetaphosphoric acid, and/or a partial ester of such a phosphoric acid, characterized in that the polyether polyol composition contains metals derived from the composite metal cyanide complex catalyst in an amount of from 1 to 30 ppm based on the polyether polyol, and the above phosphoric acid compound in an amount of from 0.5 to 100 ppm based on the polyether polyol.Type: ApplicationFiled: April 30, 2009Publication date: August 27, 2009Applicant: Asahi Glass Company, LimitedInventors: Chitoshi SUZUKI, Hiroki FUKUDA, Shigeru IKAI
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Publication number: 20090203875Abstract: To provide a purification process which makes it possible to reduce the amount of an inorganic adsorbent to be used, shorten the time for separating a polyether and the inorganic adsorbent by filtration, and further reduce the amount of a metal derived from a double metal cyanide complex catalyst in a purified polyether thereby obtained. A polyether is synthesized by ring opening polymerization of an alkylene oxide with an initiator having at least one hydroxyl group, in the presence of a double metal cyanide complex catalyst, then a powder of an inorganic adsorbent containing at least 50 vol % of fine particles having a particle size of at most 26 ?m is and further containing at least 90 vol % of fine particles having a particle size of at most 44 ?m, is added to the above polyether, and a metal derived from the above double metal cyanide complex catalyst is adsorbed on the above powder, followed by separating the above powder from the above polyether.Type: ApplicationFiled: March 2, 2009Publication date: August 13, 2009Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Chitoshi Suzuki, Tomoyuki Suzuki, Shigeru Ikai
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Patent number: 7553921Abstract: A polyether polyol composition, the reactivity of which with a polyisocyanate can be controlled, to thereby obtain an isocyanate group-terminated prepolymer having excellent storage stability. A polyether polyol composition comprising a polyether polyol obtained by a ring-opening polymerization of an alkylene oxide in the presence of a composite metal cyanide complex catalyst, and a phosphoric acid compound comprising a phosphoric acid selected from orthophosphoric acid, polyphosphoric acid and polymetaphosphoric acid, and/ or a partial ester of such a phosphoric acid, wherein the polyether polyol composition contains metals derived from the composite metal cyanide complex catalyst in an amount of from 1 to 30 ppm based on the polyether polyol, and the above phosphoric acid compound in an amount of from 0.5 to 100 ppm based on the polyether polyol.Type: GrantFiled: July 26, 2005Date of Patent: June 30, 2009Assignee: Asahi Glass Company, LimitedInventors: Chitoshi Suzuki, Hiroki Fukuda, Shigeru Ikai
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Publication number: 20080176970Abstract: To provide a flexible polyurethane foam having good vibration characteristics and suitable particularly for a seat for an automobile. A flexible polyurethane foam obtainable by reacting a polyol composition with a polyisocyanate compound in the presence of a catalyst, a blowing agent and a foam stabilizer, characterized in that the polyol composition comprises a high molecular weight polyoxyalkylene polyol (A1) and a polymer-dispersed polyol (A2) containing fine polymer particles in the high molecular weight polyoxyalkylene polyol (A1), and at least part of the fine polymer particles contained in the polymer-dispersed polyol (A2) are fine polymer particles having silicon atoms.Type: ApplicationFiled: November 26, 2007Publication date: July 24, 2008Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Takayuki SASAKI, Takashi Ito, Chitoshi Suzuki, Tomohiro Hayashi
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Publication number: 20080146775Abstract: To provide a process for producing a polyester ether poly- or mono-ol having a narrow molecular weight distribution, which is obtained by copolymerizing an initiator having hydroxyl groups with a cyclic ester compound and an alkylene oxide. It is possible to produce a polyester ether poly- or mono-ol having a molecular distribution (Mw/Mn) of from 1.02 to 1.4 by copolymerizing a cyclic ester compound which carbon number is from 3 to 9 and an alkylene oxide which carbon number is from 2 to 20 with an initiator having from 1 to 12 hydroxyl groups and having a number average molecular weight (Mn) of from 18 to 20,000 in the presence of a double-metal cyanide complex catalyst is having tert-butyl alcohol as at least a part of an organic ligand.Type: ApplicationFiled: February 15, 2008Publication date: June 19, 2008Applicant: Asahi Glass Company, LimitedInventors: Shigeki UEMORI, Shigeru Ikai, Chitoshi Suzuki
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Publication number: 20080081846Abstract: To provide a flexible polyurethane foam having good vibration characteristics and suitable particularly for a seat for an automobile. A flexible polyurethane foam obtained by reacting a polyol composition with a polyisocyanate compound in the presence of a catalyst, a blowing agent and a foam stabilizer, characterized in that the polyol composition comprises a high molecular weight polyoxyalkylene polyol (A) and a polymer-dispersed polyol (C) containing fine polymer particles in a high molecular weight polyoxyalkylene polyol (B), and at least part of the fine polymer particles are fine polymer particles obtained by polymerizing a monomer containing a fluorinated acrylate or a fluorinated methacrylate.Type: ApplicationFiled: November 26, 2007Publication date: April 3, 2008Applicant: ASAHI GLASS CO., LTD.Inventors: Takayuki SASAKI, Takashi Ito, Chitoshi Suzuki, Tomohiro Hayashi
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Patent number: 7169956Abstract: Provided is a double metal cyanide complex catalyst with a high activity which is readily produced on an industrial scale. The double metal cyanide complex catalyst is of a fine particle form and contains t-butyl alcohol or, t-butyl alcohol and another organic compound as an organic ligand. The catalyst of the fine particle form has a volume-average particle size in a range of from 3 to 20 ?m, based on measurement by a light scattering method for measuring fine particles having particle sizes of at least 0.15 ?m. A particle content of the catalyst in a particle size range of at least 0.15 ?m and at most 1 ?m is less than 5% by volume, and a particle content of the catalyst over a particles size of 1 ?m is in a range of more than 95% and at most 100% by volume.Type: GrantFiled: August 26, 2005Date of Patent: January 30, 2007Assignee: Asahi Glass Company, LimitedInventors: Chitoshi Suzuki, Hiroki Fukuda, Yoshinori Toyota, Shigeru Ikai, Hideo Sakurai
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Patent number: 7012164Abstract: A method for precisely producing a polyether having a relatively high molecular weight by means of a double metal cyanide complex catalyst is provided. A method for continuously producing a polyether, which comprises ring opening addition polymerization of an alkylene oxide in the presence of a double metal cyanide complex catalyst, wherein substantially no vapor phase part is present in a reactor.Type: GrantFiled: July 21, 2004Date of Patent: March 14, 2006Assignee: Asahi Glass Company, LimitedInventors: Kazuhiko Yamada, Nobuyuki Kasahara, Yoshinori Toyota, Chitoshi Suzuki, Shigeru Ikai, Hiroshi Hatano
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Publication number: 20060004233Abstract: Provided is a double metal cyanide complex catalyst with a high activity which is readily produced on an industrial scale. The double metal cyanide complex catalyst is of a fine particle form and contains t-butyl alcohol or, t-butyl alcohol and another organic compound as an organic ligand. The catalyst of the fine particle form has a volume-average particle size in a range of from 3 to 20 ?m, based on measurement by a light scattering method for measuring fine particles having particle sizes of at least 0.15 ?m. A particle content of the catalyst in a particle size range of at least 0.15 ?m and at most 1 ?m is less than 5% by volume, and a particle content of the catalyst over a particles size of 1 ?m is in a range of more than 95% and at most 100% by volume.Type: ApplicationFiled: August 26, 2005Publication date: January 5, 2006Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Chitoshi Suzuki, Hiroki Fukuda, Yoshinori Toyota, Shigeru Ikai, Hideo Sakurai
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Publication number: 20050267279Abstract: To provide a polyether polyol composition, whereby the reaction rate with a polyisocyanate can be controlled, and an isocyanate group-terminated prepolymer excellent particularly in storage stability can be given. A polyether polyol composition comprising a polyether polyol obtained by ring-opening polymerization of an alkylene oxide in the presence of a composite metal cyanide complex catalyst, and a phosphoric acid compound comprising a phosphoric acid selected from orthophosphoric acid, polyphosphoric acid and polymetaphosphoric acid, and/or a partial ester of such a phosphoric acid, characterized in that the polyether polyol composition contains metals derived from the composite metal cyanide complex catalyst in an amount of from 1 to 30 ppm based on the polyether polyol, and the above phosphoric acid compound in an amount of from 0.5 to 100 ppm based on the polyether polyol.Type: ApplicationFiled: July 26, 2005Publication date: December 1, 2005Applicant: Asahi Glass Company, LimitedInventors: Chitoshi Suzuki, Hiroki Fukuda, Shigeru Ikai
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Publication number: 20040260056Abstract: A method for precisely producing a polyether having a relatively high molecular weight by means of a double metal cyanide complex catalyst is provided. A method for continuously producing a polyether, which comprises ring opening addition polymerization of an alkylene oxide in the presence of a double metal cyanide complex catalyst, wherein substantially no vapor phase part is present in a reactor.Type: ApplicationFiled: July 21, 2004Publication date: December 23, 2004Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Kazuhiko Yamada, Nobuyuki Kasahara, Yoshinori Toyota, Chitoshi Suzuki, Shigeru Ikai, Hiroshi Hatano
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Patent number: 6602450Abstract: A method of producing a heat insulating board comprising two opposed facings and a core made of a rigid synthetic resin foam, which comprises spraying or injecting a foam mix for the rigid synthetic resin foam into the space between the opposed face materials and expanding and curing the foam mix, wherein the foam mix comprises a particular polyol, a polyisocyanate, a foam stabilizer, a catalyst and a blowing agent, wherein the polyol contains a polyether polyol having a hydroxyl value of at most 84 mgKOH/g and an oxyethylene group content of at least 40 wt %; a polyether polyol which is obtained by adding a cyclic ether to an amine compound and has a hydroxyl value of from 250 to 900 mgKOH/g; and fine polymer particles stably dispersed in the polyol.Type: GrantFiled: November 6, 2000Date of Patent: August 5, 2003Assignee: Asahi Glass Company, LimitedInventors: Hisashi Sato, Hiromitsu Takeyasu, Chitoshi Suzuki