Patents by Inventor Naoyuki Kakinuma
Naoyuki Kakinuma 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: 10066081Abstract: There is provided a polymerizable composition for optical materials including (A) at least one kind of polythiols selected from 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, and 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, (B) polyisocyanate, and (C) at least one kind of ultraviolet absorbers having a maximum absorption peak in a range of 350 nm to 370 nm.Type: GrantFiled: December 12, 2014Date of Patent: September 4, 2018Assignee: MITSUI CHEMICALS, INC.Inventors: Naoyuki Kakinuma, Toshiya Hashimoto, Kouya Kojima
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Patent number: 9944029Abstract: A process for producing an optical material of the present invention includes a step of mixing di- or higher-functional thiol compounds (A) having one or more sulfide bonds and/or one or more ester bonds with an imidazole-based curing catalyst (B) to prepare a mixed solution; a step of mixing the mixed solution with an isocyanate compound (C) including at least one kind of a di- or higher-functional alicyclic isocyanate compound (c1) and/or a di- or higher-functional aliphatic isocyanate compound (c2) to prepare a polymerizable composition for optical materials; a step of injecting the polymerizable composition for optical materials into a mold; and a step of polymerization-curing the polymerizable composition for optical materials in the mold.Type: GrantFiled: February 18, 2015Date of Patent: April 17, 2018Assignee: MITSUI CHEMICALS, INC.Inventor: Naoyuki Kakinuma
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Publication number: 20180093945Abstract: A manufacturing method of an isocyanate compound including obtaining a reaction solution containing an aldehyde compound by reacting a compound represented by Formula (a1) or (a2) with hydrogen and carbon monoxide in the presence of a metal compound of groups 8 to 10 and a phosphorus compound, neutralizing the reaction solution, purifying an aldehyde compound by distilling the neutralized reaction solution, reacting the aldehyde compound with ammonia and with hydrogen in the presence of a catalyst to obtain an amine compound; and reacting the amine compound with a carbonylating agent to obtain an isocyanate compound, wherein the phosphorus compound is represented by the Formula (R1O)3P, and the base compound is at least one selected from carbonate and hydrogen carbonate of metals of group I and carbonate and hydrogen carbonate of metals of group II, wherein the neutralizing the reaction solution is performed within a temperature range of 40° C. to 50° C.Type: ApplicationFiled: October 3, 2017Publication date: April 5, 2018Applicant: Mitsui Chemicals, Inc.Inventors: Naoyuki KAKINUMA, Masayuki FURUYA, Michiharu SAKATA, Koichi TOKUNAGA, Shigetoshi KUMA
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Publication number: 20180093944Abstract: A manufacturing method of an amine compound including obtaining a reaction solution containing an aldehyde compound by reacting a compound represented by Formula (a1) or (a2) with hydrogen and carbon monoxide in the presence of a metal compound of groups 8 to 10 and a phosphorus compound, neutralizing the reaction, purifying an aldehyde compound by distilling the neutralized reaction solution, and reacting the aldehyde compound with ammonia and with hydrogen in the presence of a catalyst to obtain an amine compound, wherein the phosphorus compound is represented by the Formula (R1O)3P, and the base compound is at least one selected from carbonate and hydrogen carbonate of metals of group I and carbonate and hydrogen carbonate of metals of group II, and wherein the neutralizing the reaction solution is performed within a temperature range of 40° C. to 50° C.Type: ApplicationFiled: October 3, 2017Publication date: April 5, 2018Applicant: Mitsui Chemicals, Inc.Inventors: Naoyuki KAKINUMA, Masayuki FURUYA, Michiharu SAKATA, Koichi TOKUNAGA, Shigetoshi KUMA
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Patent number: 9933635Abstract: The optical material of the present invention contains one or more kinds of ultraviolet absorber (a) having a maximum absorption peak within a range of equal to or greater than 350 nm and equal to or less than 370 nm, in which a light transmittance of the optical material having a thickness of 2 mm satisfies the following characteristics (1) to (3), (1) a light transmittance at a wavelength of 410 nm is equal to or less than 10%, (2) a light transmittance at a wavelength of 420 nm is equal to or less than 70%, and (3) a light transmittance at a wavelength of 440 nm is equal to or greater than 80%.Type: GrantFiled: February 27, 2014Date of Patent: April 3, 2018Assignee: MITSUI CHEMICALS INC.Inventors: Toshiya Hashimoto, Naoyuki Kakinuma, Kouya Kojima
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Publication number: 20180016415Abstract: A polymerizable composition for an optical material including (A) an isocyanate compound; (B) an active hydrogen compound; and (C) one or more types of ultraviolet absorber represented by General Formula (1) and having a maximum absorption peak in a range of equal to or more than 350 nm and equal to or less than 370 nm. (In General Formula (1) above, R1 and R2 represent, an alkyl group having 1 to 8 carbon atoms and may be same or different from each other, a plurality of R1 present or a plurality of R2 present may be same or different, m represents an integer of 0 to 3, n represents an integer of 0 to 3, and R3 represents a functional group having 2 to 15 carbon atoms which includes an ester bond.Type: ApplicationFiled: February 1, 2016Publication date: January 18, 2018Applicant: MITSUI CHEMICALS, INC.Inventors: Naoyuki KAKINUMA, Kouju OKAZAKI
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Patent number: 9857503Abstract: An optical material of the present invention has the following characteristics (1) to (4) in a transmittance curve which is measured at a thickness of 2 mm of the optical material. (1) the transmittance curve has a maximum transmittance value at 400 nm to 440 nm and the maximum transmittance thereof is 50% or more. (2) the transmittance curve has a minimum transmittance value at 471 nm to 500 nm. (3) The transmittance at 540 nm is 60% or more. (4) The minimum transmittance value at 471 nm to 500 nm is seven-tenths or less of the maximum transmittance at 400 nm to 440 nm and is seven-tenths or less of the transmittance at 540 nm.Type: GrantFiled: September 10, 2014Date of Patent: January 2, 2018Assignees: MITSUI CHEMICALS, INC., YAMAMOTO CHEMICALS, INC.Inventors: Kouya Kojima, Toshiya Hashimoto, Naoyuki Kakinuma, Satoshi Kinoshita, Hiroyuki Sasaki
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Publication number: 20170355106Abstract: An internal release agent includes at least one phosphodiester represented by the following general formula (1). In the formula, R1 and R2 independently represent a hydrocarbon group having 1 to 30 carbon atoms, which is optionally substituted with at least one hydroxyl group, and R3 represents an alkylene group having 2 to 4 carbon atoms. A plurality of R3's may be the same as or different from each other. M represents a hydrogen atom, an ammonium ion, an alkali metal ion, or a monovalent/divalent alkali earth metal ion, and n is an integer of 1 to 60.Type: ApplicationFiled: December 25, 2015Publication date: December 14, 2017Applicant: MITSUI CHEMICALS, INC.Inventors: Kouju OKAZAKI, Naoyuki KAKINUMA, Motoharu OIKI
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Patent number: 9809533Abstract: The purification method of an aldehyde compound of the present invention includes a step of neutralizing a reaction solution containing an aldehyde compound by adding water and a base compound to the reaction solution, and a step of distilling the neutralized reaction solution, in which the reaction solution is obtained by reacting a compound represented by the following Formula (a1) or (a2) with hydrogen and carbon monoxide in the presence of a metal compound of groups 8 to 10 and a phosphorus compound, the phosphorus compound is represented by Formula (R1O)3P, and the base compound is at least one kind selected from among carbonate and hydrogen carbonate of metals of group I on the periodic table and carbonate and hydrogen carbonate of metals of group II on the periodic table.Type: GrantFiled: November 8, 2013Date of Patent: November 7, 2017Assignee: MITSUI CHEMICALS, INC.Inventors: Naoyuki Kakinuma, Masayuki Furuya, Michiharu Sakata, Koichi Tokunaga, Shigetoshi Kuma
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Patent number: 9720137Abstract: The eyewear material is an eyewear material containing thermoplastic polyurethane. The eyewear material has a tan ? peak at both less than 0° C. and 0° C. or more and 70° C. or less observed in dynamic viscoelasticity measurement in tensile mode under the measurement conditions of a temperature increase speed of 5° C./min and a measurement frequency of 10 Hz.Type: GrantFiled: September 25, 2014Date of Patent: August 1, 2017Assignee: MITSUI CHEMICALS, INC.Inventors: Satoshi Yamasaki, Goro Kuwamura, Daisuke Nishiguchi, Daisuke Hasegawa, Toshihiko Nakagawa, Hirokazu Morita, Hidetaka Tsukada, Kenichi Goto, Shinsuke Ito, Naoyuki Kakinuma, Tetsuya Hamada, Shinji Kiyono, Takeshi Fukuda, Kazuhiro Kosumi
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Patent number: 9708260Abstract: A method for producing meta-xylylenediamines includes a reaction step in which monohalogenated benzenes, formaldehydes, and an amide compound having a primary amide group or a secondary amide group are allowed to react in the presence of an acidic liquid, a dehalogenation step in which the halogen atom derived from the monohalogenated benzenes is replaced with a hydrogen atom, and a deprotection step in which the primary amide group or the secondary amide group derived from the amide compound is converted to an amino group. In the reaction step, the acidic liquid contains inorganic acid, the equivalent ratio of the hydrogen atom of the inorganic acid relative to the monohalogenated benzenes is more than 16; the acidic liquid has an inorganic acid concentration of more than 80 mass %; and the reaction temperature is more than 40° C.Type: GrantFiled: August 11, 2014Date of Patent: July 18, 2017Assignee: MITSUI CHEMICALS INC.Inventors: Kouya Kojima, Hidetaka Tsukada, Mamoru Takashina, Chitoshi Shimakawa, Naoyuki Kakinuma
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Patent number: 9670148Abstract: A method for producing meta-xylylenediisocyanates includes a reaction step in which monohalogenated benzenes, formaldehydes, and an amide compound represented by general formula (1) below are allowed to react in the presence of an acidic liquid to produce a bisamide compound; a dehalogenation step in which in the bisamide compound, the halogen atom derived from the monohalogenated benzenes is replaced with a hydrogen atom; and a thermal decomposition step in which the bisamide compound from which the halogen atom is eliminated is subjected to thermal decomposition. In the reaction step, the acidic liquid contains inorganic acid, the equivalent ratio of the hydrogen atom of the inorganic acid relative to the monohalogenated benzenes is more than 14, the acidic liquid has an inorganic acid concentration of more than 90 mass %, and the reaction temperature is more than 10° C. General formula (1): wherein R1 represents an alkoxy group or an amino group.Type: GrantFiled: August 11, 2014Date of Patent: June 6, 2017Assignee: MITSUI CHEMICALS, INC.Inventors: Kouya Kojima, Hidetaka Tsukada, Mamoru Takashina, Chitoshi Shimakawa, Naoyuki Kakinuma
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Publication number: 20170057184Abstract: A process for producing an optical material of the present invention includes a step of mixing di- or higher-functional thiol compounds (A) having one or more sulfide bonds and/or one or more ester bonds with an imidazole-based curing catalyst (B) to prepare a mixed solution; a step of mixing the mixed solution with an isocyanate compound (C) including at least one kind of a di- or higher-functional alicyclic isocyanate compound (c1) and/or a di- or higher-functional aliphatic isocyanate compound (c2) to prepare a polymerizable composition for optical materials; a step of injecting the polymerizable composition for optical materials into a mold; and a step of polymerization-curing the polymerizable composition for optical materials in the mold.Type: ApplicationFiled: February 18, 2015Publication date: March 2, 2017Applicant: Mitsui Chemicals, Inc.Inventor: Naoyuki KAKINUMA
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Publication number: 20170009002Abstract: Disclosed is a polymerizable composition for an optical material containing polyisocyanate (a) including aliphatic polyisocyanate (a1) and a modified aliphatic polyisocyanate (a2); and polythiol (b) having a di- or higher functional thiol group, in which the modified aliphatic polyisocyanate (a2) is contained in the polyisocyanate (a) in the amount of less than or equal to 60 weight %.Type: ApplicationFiled: February 5, 2015Publication date: January 12, 2017Applicant: MITSUI CHEMICALS, INC.Inventors: Hidetaka TSUKADA, Shinsuke ITO, Naoyuki KAKINUMA, Kenichi GOTO, Toshihiko NAKAGAWA, Satoshi YAMASAKI
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Patent number: 9487475Abstract: A preparation method of an aldehyde compound of the present invention includes a step of reacting a compound represented by the following general formula (a1) with hydrogen and carbon monoxide in the presence of a metal compound including 0.01 ppmmol to 10 ppmmol of a metal belonging to Groups 8 to 10 with respect to 1 mole of the compound and a phosphorus compound, and in the step, the amount of acrylonitrile included in the compound represented by the general formula (a1) is equal to or less than 200-fold by mole with respect to 1 mole of the metal belonging to Groups 8 to 10.Type: GrantFiled: November 8, 2013Date of Patent: November 8, 2016Assignee: MITSUI CHEMICALS, INC.Inventors: Koichi Tokunaga, Naoyuki Kakinuma, Shigetoshi Kuma
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Publication number: 20160313575Abstract: There is provided a polymerizable composition for optical materials including polyisocyanate (A), polythiol (B), an acidic phosphoric ester (C) represented by the following General Formula (1), and one or more kinds of ultraviolet absorbers (D) having a maximum absorption peak in a range of 350 nm to 370 nm, in which in a case where the total molar number of isocyanate groups in the polyisocyanate (A) is 100 mol %, a secondary isocyanate group is included in 20 mol % or more and the acidic phosphoric ester (C) is included in an amount of 100 ppm to 700 ppm with respect to the total weight of the polyisocyanate (A) and the polythiol (B).Type: ApplicationFiled: December 12, 2014Publication date: October 27, 2016Applicant: Mitsui Chemicals, Inc.Inventors: Naoyuki KAKINUMA, Toshiya HASHIMOTO, Kouya KOJIMA
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Patent number: 9477012Abstract: 1,4-bis(isocyanatomethyl)cyclohexane contains 70 mol % or more and 95 mol % or less of a trans isomer relative to a total amount of a cis isomer and the trans isomer, and 0.Type: GrantFiled: June 5, 2015Date of Patent: October 25, 2016Assignee: MITSUI CHEMICALS, INC.Inventors: Satoshi Yamasaki, Hirokazu Morita, Goro Kuwamura, Daisuke Nishiguchi, Toshihiko Nakagawa, Daisuke Hasegawa, Tetsuya Hamada, Shinji Kiyono, Takeshi Fukuda, Kazuhiro Kosumi, Hidetaka Tsukada, Kenichi Goto, Shinsuke Ito, Naoyuki Kakinuma
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Patent number: 9475903Abstract: 1,4-bis(isocyanatomethyl)cyclohexane contains 70 mol % or more and 95 mol % or less of a trans isomer relative to a total amount of a cis isomer and the trans isomer, and 0.Type: GrantFiled: September 25, 2014Date of Patent: October 25, 2016Assignee: MITSUI CHEMICALS, INC.Inventors: Satoshi Yamasaki, Hirokazu Morita, Goro Kuwamura, Daisuke Nishiguchi, Toshihiko Nakagawa, Daisuke Hasegawa, Tetsuya Hamada, Shinji Kiyono, Takeshi Fukuda, Kazuhiro Kosumi, Hidetaka Tsukada, Kenichi Goto, Shinsuke Ito, Naoyuki Kakinuma
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Patent number: 9475760Abstract: A preparation method of an aldehyde compound of the present invention includes a step of reacting the compound represented by the following general formula (a1) or (a2) with hydrogen and carbon monoxide in the presence of a metal compound including 0.01 ppmmol to 10 ppmmol of a metal belonging to Groups 8 to 10 with respect to 1 mole of the compound and a phosphorus compound, and the amount of a chlorine portion in the reaction system in the step is equal to or less than 1.5 parts by weight with respect to 1 part by weight of the metal belonging to Groups 8 to 10.Type: GrantFiled: November 8, 2013Date of Patent: October 25, 2016Assignee: MITSUI CHEMICALS, INC.Inventors: Koichi Tokunaga, Naoyuki Kakinuma, Shigetoshi Kuma
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Publication number: 20160304701Abstract: There is provided a polymerizable composition for optical materials including (A) at least one kind of polythiols selected from 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, and 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, (B) polyisocyanate, and (C) at least one kind of ultraviolet absorbers having a maximum absorption peak in a range of 350 nm to 370 nm.Type: ApplicationFiled: December 12, 2014Publication date: October 20, 2016Applicant: MITSUI CHEMICALS, INC.Inventors: Naoyuki KAKINUMA, Toshiya HASHIMOTO, Kouya KOJIMA