Patents Assigned to Toray Fine Chemicals Co., Ltd.
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Patent number: 8664413Abstract: An epoxy compound of high-purity N,N,N?,N?-tetraglycidyl-3,4?-diaminodiphenyl ether is produced by: an addition reaction step of reacting 3,4?-diaminodiphenyl ether with epichlorohydrin in a polar protic solvent at 65 to 100° C. for 12 hours or longer to form N,N,N?,N?-tetrakis(3-chloro-2-hydroxypropyl)-3,4?-diaminodiphenyl ether; and a cyclization reaction step of reacting the N,N,N?,N?-tetrakis(3-chloro-2-hydroxypropyl)-3,4?-diaminodiphenyl ether with an alkali compound for dehydrochlorination.Type: GrantFiled: March 2, 2011Date of Patent: March 4, 2014Assignee: Toray Fine Chemicals Co., Ltd.Inventors: Michiya Ishikawa, Hidetoshi Kato, Jiro Nakatani, Atsuhito Arai, Hiroaki Sakata, Hiroshi Taiko
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Patent number: 8415490Abstract: A novel epoxy compound represented by the following formula and a method for producing the same are provided: wherein R1 and R2 are members selected from the group consisting of hydrogen, aliphatic hydrocarbon group having 1 to 4 carbon atoms, alicyclic hydrocarbon group having 3 to 6 carbon atoms, aromatic hydrocarbon group having 6 to 10 carbon atoms, halogen atom, ether group, ester group, acyl group and nitro group, n is an integer of 1 to 4, and m is an integer of 1 to 5.Type: GrantFiled: October 13, 2009Date of Patent: April 9, 2013Assignee: Toray Fine Chemicals Co., Ltd.Inventors: Koutaro Ono, Michiya Ishikawa, Jiro Nakatani
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Publication number: 20130012730Abstract: An epoxy compound of high-purity N,N,N?,N?-tetraglycidyl-3,4?-diaminodiphenyl ether is produced by: an addition reaction step of reacting 3,4?-diaminodiphenyl ether with epichloro-hydrin in a polar protic solvent at 65 to 100° C. for 12 hours or longer to form N,N,N?,N?-tetrakis(3-chloro-2-hydroxypropyl)-3,4?-diaminodiphenyl ether; and a cyclization reaction step of reacting the N,N,N?,N?-tetrakis(3-chloro-2-hydroxypropyl)-3,4?-diaminodiphenyl ether with an alkali compound for dehydrochlorination.Type: ApplicationFiled: March 2, 2011Publication date: January 10, 2013Applicant: TORAY FINE CHEMICALS CO., LTD.Inventors: Michiya Ishikawa, Hidetoshi Kato, Jiro Nakatani, Atsuhito Arai, Hiroaki Sakata, Hiroshi Taiko
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Patent number: 7893306Abstract: A process for producing biphenyl derivatives represented by formula (1), including reacting a chlorine atom of a benzene derivative represented by formula (2) with metallic magnesium to form a Grignard reagent, and coupling two molecules of the Grignard reagent with each other in the presence of a catalyst. (wherein A represents at least one member selected from the group consisting of trifluoromethyl and fluoro, and n is an integer of 1 to 4.) (wherein A represents at least one member selected from the group consisting of trifluoromethyl and fluoro, and n is an integer of 1 to 4.Type: GrantFiled: October 25, 2006Date of Patent: February 22, 2011Assignees: Toray Fine Chemicals Co., Ltd.Inventors: Tamio Hayashi, Jiro Nakatani
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Publication number: 20110040111Abstract: A novel epoxy compound represented by the following formula and a method for producing the same are provided: wherein R1 and R2 are members selected from the group consisting of hydrogen, aliphatic hydrocarbon group having 1 to 4 carbon atoms, alicyclic hydrocarbon group having 3 to 6 carbon atoms, aromatic hydrocarbon group having 6 to 10 carbon atoms, halogen atom, ether group, ester group, acyl group and nitro group, n is an integer of 1 to 4, and m is an integer of 1 to 5.Type: ApplicationFiled: October 13, 2009Publication date: February 17, 2011Applicant: Toray Fine Chemicals Co., Ltd.Inventors: Koutaro Ono, Michiya Ishikawa, Jiro Nakatani
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Patent number: 7879903Abstract: An optically active 3-aminopyrrolidine (3AP) salt has a high optical purity which is useful as an intermediate in an industrial production method of an optically active 3AP, an efficient method for producing it, and an efficient industrial method for optical resolution of 3AP. Optical resolution of 3AP is efficiently carried out by reacting racemic 3AP with optically active 2-methoxyphenylacetic acid in the presence of a mineral acid such as hydrochloric acid in an aqueous solvent, followed by separation of the resulting diastereomer salt constituted by 1 mole of optically active 3AP and 2 moles of optically active 2-methoxyphenylacetic acid.Type: GrantFiled: December 22, 2008Date of Patent: February 1, 2011Assignee: Toray Fine Chemicals Co., Ltd.Inventors: Rumiko Sakurai, Atsushi Yuzawa, Kenichi Sakai
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Publication number: 20100267966Abstract: An optically active 3-aminopyrrolidine (3AP) salt has a high optical purity which is useful as an intermediate in an industrial production method of an optically active 3AP, an efficient method for producing it, and an efficient industrial method for optical resolution of 3AP. Optical resolution of 3AP is efficiently carried out by reacting racemic 3AP with optically active 2-methoxyphenylacetic acid in the presence of a mineral acid such as hydrochloric acid in an aqueous solvent, followed by separation of the resulting diastereomer salt constituted by 1 mole of optically active 3AP and 2 moles of optically active 2-methoxyphenylacetic acid.Type: ApplicationFiled: December 22, 2008Publication date: October 21, 2010Applicant: TORAY FINE CHEMICALS CO., LTD.Inventors: Rumiko Sakurai, Atsushi Yuzawa, Kenichi Sakai
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Publication number: 20100230634Abstract: A method produces a biphenyl derivative, with an industrially high yield and excellent productivity, by use of a raw material which is low in cost and toxicity. The method for producing the biphenyl derivative represented by Formula (1) is characterized in that a chlorine atom in a benzene derivative represented by Formula (2) reacts with magnesium metal to convert the benzene derivative into a Grignard reagent, and then the Grignard reagent is subjected to a coupling reaction in the presence of a catalyst and a dichloropropane: (wherein A represents at least one selected from alkyl groups, alkoxy groups, alkoxymethyl groups, a vinyl group, phenyl groups and chlorine, and n represents an integer of 1 to 4).Type: ApplicationFiled: October 12, 2007Publication date: September 16, 2010Applicants: TORAY FINE CHEMICALS CO., LTD.Inventors: Tamio Hayashi, Jiro Nakatani
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Patent number: 7772406Abstract: Provided are: a process for production of a benzyloxypyrrolidine derivative in high yield and safety, and a process for production of a hydrochloride powder of a benzyloxypyrrolidine derivative in high yield and safety; the process for production of a benzyloxypyrrolidine derivative expressed by the general formula (2) [Chemical formula 2], in reacting a pyrrolidinol derivative represented by the general formula (1) [Chemical formula 1] with a benzyl halide derivative in the presence of an alkali metal hydroxide, wherein the reaction is carried out in either of the following conditions A or B; condition A: an aprotic polar solvent, and condition B: an aliphatic ether solvent containing a phase transfer catalyst:Type: GrantFiled: October 30, 2006Date of Patent: August 10, 2010Assignee: Toray Fine Chemicals Co., Ltd.Inventors: Masao Morimoto, Atsushi Yamakawa
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Publication number: 20100185012Abstract: A method of producing optically active trans-2-aminocyclohexanol includes allowing racemic trans-2-aminocyclohexanol to react with optically active 2-methoxyphenylacetic acid to produce an optically active 2-methoxyphenylacetic acid salt of optically active trans-2-aminocyclohexanol and separating the salt. An optically active 2-methoxyphenylacetic acid salt of optically active trans-2-aminocyclohexanol is also provided. The method makes it possible to produce optically active trans-2-aminocyclohexanol with ease and a high yield from an industrially-advantageous, inexpensive raw material.Type: ApplicationFiled: June 18, 2008Publication date: July 22, 2010Applicant: TORAY FINE CHEMICALS CO., LTDInventors: Ryuji Ogawa, Toshihiro Fujino, Kenichi Sakai
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Publication number: 20100036167Abstract: A method produces 2,2?-bis(trifluoromethyl)-4,4?-diaminobiphenyl, wherein 2,2?-bis(trifluoromethyl)biphenyl is produced from o-chlorobenzotrifluoride, further, 2,2?-bis(trifluoromethyl)biphenyl is dinitrated in 1,2-dichloropropane solution, and 2,2?-bis(trifluoromethyl)-4,4?-dinitrobiphenyl is isolated and reduced. The method for producing of 2,2?-bis(trifluoromethyl)-4,4?-diaminobiphenyl is an industrially excellent method for producing with high safety and high production efficiency.Type: ApplicationFiled: November 5, 2007Publication date: February 11, 2010Applicant: TORAY FINE CHEMICALS CO., LTD.Inventor: Jiro Nakatani
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Patent number: 7569690Abstract: If an organic solvent with a water content of 15% or less is used when an oxycarbonyl-substituted piperazine derivative is produced from a piperazine derivative, the piperazine derivative can be oxycarbonylated.Type: GrantFiled: September 2, 2003Date of Patent: August 4, 2009Assignee: Toray Fine Chemicals Co., Ltd.Inventors: Masao Morimoto, Haruyo Sato
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Publication number: 20080319238Abstract: A process for producing biphenyl derivatives represented by formula (1), including reacting a chlorine atom of a benzene derivative represented by formula (2) with metallic magnesium to form a Grignard reagent, and coupling two molecules of the Grignard reagent with each other in the presence of a catalyst. (wherein A represents at least one member selected from the group consisting of trifluoromethyl and fluoro, and n is an integer of 1 to 4.) (wherein A represents at least one member selected from the group consisting of trifluoromethyl and fluoro, and n is an integer of 1 to 4.Type: ApplicationFiled: October 25, 2006Publication date: December 25, 2008Applicants: Toray Fine Chemicals Co., Ltd.Inventors: Tamio Hayashi, Jiro Nakatani
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Patent number: 7358384Abstract: When a salt of an amine and an optically active diacyltartaric acid, or a diastereomer salt of an optically active amine and an optically active diacyltartaric acid, obtained by optically resolving a racemic amine using the optically active diacyltartaric acid, is salt-exchanged with an acid aqueous solution, the optically active diacyltartaric acid is added in the acid aqueous solution beforehand. Furthermore, a raw material containing a racemic amine and an optically active diacyltartaric acid is optically resolved, and the diastereomer salt of the optically active amine and the optically active diacyltartaric acid respectively of one isomer type, is separated. The obtained diastereomer salt is dissociated using an acid aqueous solution containing the optically active diacyltartaric acid, for recovering the optically active diacyltartaric acid, and the obtained optically active diacyltartaric acid is recycled into an optical resolution step as a raw material of the optical resolution step.Type: GrantFiled: December 22, 2003Date of Patent: April 15, 2008Assignee: Toray Fine Chemicals Co., Ltd.Inventors: Seiji Morii, Toshihiro Fujino, Haruyo Sato
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Patent number: 7166666Abstract: A curing composition contains a polymer having two or more thiol groups per molecule, a compound having two or more isocyanate groups per molecule, and carbon black, and further contains a filler of which main ingredient is silicic acid or a silicate, or contains an organic filler of which main ingredient is pulverized coal. The curing composition has satisfactory storage stability of base compound and satisfactory curability event after storage of the base compound and, furthermore, gives a cured compound having sufficient strength at break, hardness, and gas-barrier properties. The curing composition is hence suitable for use as a sealant for insulating glass manufacture, vehicle window frames, etc.Type: GrantFiled: January 14, 2003Date of Patent: January 23, 2007Assignee: Toray Fine Chemicals Co., Ltd.Inventors: Tomohiro Ooba, Kazuhisa Sakae
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Patent number: 7091281Abstract: A curable coating composition is provided which comprises an acrylic resin having an epoxy group and a hydroxyl group in the side chain (A) and a compound having an amino group (B). The composition may further comprise a silane compound having an epoxy group or an amino group in the molecule (C).Type: GrantFiled: April 5, 2002Date of Patent: August 15, 2006Assignee: Toray Fine Chemicals Co., Ltd.Inventors: Ichiji Kageishi, Yumi Ando, Hiroyuki Kobayashi, Yoshitaka Osanai, Yasukazu Suga
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Publication number: 20060167167Abstract: A curing composition contains a polymer having two or more thiol groups per molecule, a compound having two or more isocyanate groups per molecule, and carbon black, and further contains a filler of which main ingredient is silicic acid or a silicate, or contains an organic filler of which main ingredient is pulverized coal. The curing composition has satisfactory storage stability of base compound and satisfactory curability event after storage of the base compound and, furthermore, gives a cured compound having sufficient strength at break, hardness, and gas-barrier properties. The curing composition is hence suitable for use as a sealant for insulating glass manufacture, vehicle window frames, etc.Type: ApplicationFiled: January 14, 2003Publication date: July 27, 2006Applicant: Toray Fine Chemicals Co., Ltd a corporation of JapanInventors: Tomohiro Ooba, Kazuhisa Sakae
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Patent number: 6939941Abstract: A process is provided for the manufacture of liquid polysulfide polymers. In particular, the process allows for making the liquid form of the polysulfide polymer directly and eliminates the need to first make a solid polysulfide polymer and then convert it to a liquid.Type: GrantFiled: August 27, 2002Date of Patent: September 6, 2005Assignee: Toray Fine Chemicals Co., Ltd.Inventors: John Richard Gilmore, Keith Bradley Potts, Steven John Hobbs, Marc Edward Halpern, Thomas Dennis Mundle
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Patent number: 6706916Abstract: In producing optically-active amino acid benzyl esters by reacting optically-active amino acids with benzyl alcohols, hydrazines are present in the reaction system, or the compounds are reacted in the absence of oxygen, or the compounds are reacted in the absence of oxygen while hydrazines are present in the reaction system. The processes are simple and give optically-active amino acid benzyl esters of high optical purity.Type: GrantFiled: August 17, 2001Date of Patent: March 16, 2004Assignee: Toray Fine Chemicals Co., Ltd.Inventors: Haruyo Sato, Takae Ohno, Shiho Iwata
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Patent number: 6531108Abstract: This invention provides a highly pure and highly concentrated free hydroxylamine aqueous solution substantially not containing any salt or organic substance. This invention is a process for obtaining a free hydroxylamine aqueous solution, comprising the steps of letting an aqueous solution or slurry containing hydroxylammonium sulfate and an alkali react with each other, to obtain an aqueous solution or slurry containing free hydroxylamine and dissolved or partially precipitated sulfates; mixing the obtained reaction solution and a lower alcohol, to precipitate solid sulfates; separating a solution containing the lower alcohol and some of water by distillation from the aqueous solution remaining after separating and removing the solid sulfates; and obtaining a free hydroxylamine aqueous solution from the remaining solution by distillation.Type: GrantFiled: July 19, 2000Date of Patent: March 11, 2003Assignee: Toray Fine Chemicals Co., Ltd.Inventors: Kumiko Bansho, Yoshio Noguchi