Patents by Inventor Fumiaki Hirata
Fumiaki Hirata 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: 7897805Abstract: A polyisocyanate production method that can allow effective use of hydrogen chloride produced secondarily in a polyisocyanate production process, while allowing reduction of environmental burdens, and a polyisocyanate production system for performing the polyisocyanate production method. After chlorine is allowed to react with carbon monoxide to produce carbonyl chloride in a carbonyl chloride producing reactor, the carbonyl chloride produced in the carbonyl chloride producing reactor is allowed to react with polyamine in an isocyanate producing reactor to produce polyisocyanate. Then, after hydrochloric gas produced secondarily in the isocyanate producing reactor is purified in a hydrogen chloride purifying column, the purified hydrochloric gas is oxidized in a hydrogen chloride oxidizing reactor to produce chlorine.Type: GrantFiled: March 8, 2006Date of Patent: March 1, 2011Assignee: Mitsui Chemicals, Inc.Inventors: Masaaki Sasaki, Takao Naito, Fumiaki Hirata, Masato Saruwatari, Hirofumi Takahashi, Kouji Maeba, Tsugio Imaizumi, Takuya Saeki, Takashi Yamaguchi, Kouichirou Terada
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Publication number: 20100226833Abstract: A polyisocyanate production method that can allow effective use of hydrogen chloride produced secondarily in a polyisocyanate production process, while allowing reduction of environmental burdens, and a polyisocyanate production system for performing the polyisocyanate production method. After chlorine is allowed to react with carbon monoxide to produce carbonyl chloride in a carbonyl chloride producing reactor, the carbonyl chloride produced in the carbonyl chloride producing reactor is allowed to react with polyamine in an isocyanate producing reactor to produce polyisocyanate. Then, after hydrochloric gas produced secondarily in the isocyanate producing reactor is purified in a hydrogen chloride purifying column, the purified hydrochloric gas is oxidized in a hydrogen chloride oxidizing reactor to produce chlorine.Type: ApplicationFiled: April 16, 2010Publication date: September 9, 2010Applicant: Mitsui Chemicals Polyurethanes, Inc.Inventors: Masaaki Sasaki, Takao Naito, Fumiaki Hirata, Masato Saruwatari, Hirofumi Takahashi, Kouji Maeba, Tsugio Imaizumi, Takuya Saeki, Takashi Yamaguchi, Kouichirou Terada
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Patent number: 7691940Abstract: An object of the present invention is to provide an aqueous polyurethane resin in which stable emulsion is formed, the balance between hydrophilicity and hydrophobicity is controlled and an obtained film has desired permeability and good stability, a method for producing the aqueous polyurethane resin, and a film obtained from the aqueous polyurethane resin. The aqueous polyurethane resin of the present invention includes a plurality of polyurethane resins obtained by reacting macropolyol, polyisocyanate, and a chain extender, and each of the aqueous polyurethane resins contains the macropolyols which are different from one another, and each of the aqueous polyurethane resins is chemically bonded partially to one another through the chain extender. By casting or coating the aqueous polyurethane resin, the film is obtained.Type: GrantFiled: December 8, 2005Date of Patent: April 6, 2010Assignee: Mitsui Chemicals, Inc.Inventors: Masahiro Isobe, Fumiaki Hirata
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Publication number: 20080154066Abstract: A polyisocyanate production method that can allow effective use of hydrogen chloride produced secondarily in a polyisocyanate production process, while allowing reduction of environmental burdens, and a polyisocyanate production system for performing the polyisocyanate production method. After chlorine is allowed to react with carbon monoxide to produce carbonyl chloride in a carbonyl chloride producing reactor, the carbonyl chloride produced in the carbonyl chloride producing reactor is allowed to react with polyamine in an isocyanate producing reactor to produce polyisocyanate. Then, after hydrochloric gas produced secondarily in the isocyanate producing reactor is purified in a hydrogen chloride purifying column, the purified hydrochloric gas is oxidized in a hydrogen chloride oxidizing reactor to produce chlorine.Type: ApplicationFiled: March 8, 2006Publication date: June 26, 2008Applicant: Mitsui Chemicals Polyurethanes, IncInventors: Masaaki Sasaki, Takao Naito, Fumiaki Hirata, Masato Saruwatari, Hirofumi Takahashi, Kouji Maeba, Tsugio Imaizumi, Takuya Saeki, Takashi Yamaguchi, Kouichirou Terada
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Publication number: 20080045650Abstract: An object of the present invention is to provide an aqueous polyurethane resin in which stable emulsion is formed, the balance between hydrophilicity and hydrophobicity is controlled and an obtained film has desired permeability and good stability, a method for producing the aqueous polyurethane resin, and a film obtained from the aqueous polyurethane resin. The aqueous polyurethane resin of the present invention includes a plurality of polyurethane resins obtained by reacting macropolyol, polyisocyanate, and a chain extender, and each of the aqueous polyurethane resins contains the macropolyols which are different from one another, and each of the aqueous polyurethane resins is chemically bonded partially to one another through the chain extender. By casting or coating the aqueous polyurethane resin, the film is obtained.Type: ApplicationFiled: December 8, 2005Publication date: February 21, 2008Applicant: Mitsui Chemicals Polyurethanes, Inc.Inventors: Masahiro Isobe, Fumiaki Hirata
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Patent number: 7122697Abstract: A method for producing carbamates that enables carbamates to be produced at low costs, with high selectivity and high yield, and in a simple manner, and a method for producing isocyanates that enables isocyanates industrially used to be produced by using the carbamates obtained by the carbamates producing method. Nonaromatic amine selected from the group consisting of aliphatic amine, alicyclic amine, and aralkyl amine is allowed to react with alkylaryl carbonate to thereby produce carbamates. Also, the carbamates thus obtained are thermally decomposed to thereby produce isocyanates. When carbamates are produced in this method, alkyl carbamates can be obtained with high selectivity and at high yield by using simple equipment. Also, when isocyanates are produced in this method, polyisocyanates used industrially as the raw material of polyurethane can be produced in a simple manner and with efficiency.Type: GrantFiled: December 24, 2002Date of Patent: October 17, 2006Assignee: Mitsui Takeda Chemicals, Inc.Inventors: Tsutomu Yoshida, Masaaki Sasaki, Satoshi Kuroiwa, Fumiaki Hirata
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Patent number: 6797770Abstract: A coating composition capable of forming an alkali-soluble lubricating film, which contains as main components an aqueous polyurethane composition (A) and a lubricating functionality-providing agent (B) at 1-30 wt % with respect to the solid content of the aqueous polyurethane composition, having excellent press moldability and scratch resistance, as well as lubricating surface treated metal articles with excellent press moldability and scratch resistance, that are coated with the coating composition to a dry film thickness of 0.5-5 &mgr;m. The coating composition preferably further contains as a main component silica particles (C) in an amount of 1-30 wt % with respect to the solid content of the aqueous polyurethane composition.Type: GrantFiled: October 31, 2001Date of Patent: September 28, 2004Assignees: Nippon Steel Corporation, Mitsui Takeda Chemicals, INCInventors: Yoichiro Mori, Makoto Yamasaki, Masahiro Fuda, Ryosuke Wake, Tsutomu Tawa, Chikako Kouda, Fumiaki Hirata
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Publication number: 20030125579Abstract: A method for producing carbamates that enables carbamates to be produced at low costs, with high selectivity and high yield, and in a simple manner, and a method for producing isocyanates that enables isocyanates industrially used to be produced by using the carbamates obtained by the carbamates producing method. Nonaromatic amine selected from the group consisting of aliphatic amine, alicyclic amine, and aralkyl amine is allowed to react with alkylaryl carbonate to thereby produce carbamates. Also, the carbamates thus obtained are thermally decomposed to thereby produce isocyanates. When carbamates are produced in this method, alkyl carbamates can be obtained with high selectivity and at high yield by using simple equipment. Also, when isocyanates are produced in this method, polyisocyanates used industrially as the raw material of polyurethane can be produced in a simple manner and with efficiency.Type: ApplicationFiled: December 24, 2002Publication date: July 3, 2003Inventors: Tsutomu Yoshida, Masaaki Sasaki, Satoshi Kuroiwa, Fumiaki Hirata
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Patent number: 5576412Abstract: An optical urethane resin is obtained by reacting a polyiso(thio)cyanate compound having a hydrolyzable chlorine content of not greater than 300 ppm with an active hydrogen compound. There is provided an optical urethane resin with a minimum of coloration, a high total light transmittance and free of optical distortion.Type: GrantFiled: May 13, 1994Date of Patent: November 19, 1996Assignee: Takeda Chemical Industries, Ltd.Inventors: Fumiaki Hirata, Tatsuya Nakashima, Ichiro Minato
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Patent number: 5086175Abstract: A polyisocyanate having an isocyanurate ring which is obtained by reacting a diisocyanate compound selected from the group consisting of alkylene, cycloalkylene and aralkylene diisocyanates with a monoalcohol of 10 to 50 carbon atoms in the presence of an isocyanuration catalyst, and removing of the unreacted diisocyanate compound from the reaction mixture, can be used in combination with various polyols, in the main, for the preparation of coatings, adhesives, architectural materials, molding materials, etc.Type: GrantFiled: December 18, 1989Date of Patent: February 4, 1992Assignee: Takeda Chemical Industries, Ltd.Inventors: Ichiro Minato, Fumiaki Hirata, Tatsuya Nakashima