Patents by Inventor Yoshikazu KANAMORI
Yoshikazu KANAMORI 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: 11608405Abstract: Provided is a polycarbonate polyol used as a raw material of a polyurethane that has an excellent balance of flexibility, mechanical strength and solvent resistance. The polycarbonate polyol includes structural units derived from a polyhydric alcohol and has a hydroxyl value of 20 to 450 mg KOH/g. The polyhydric alcohol includes: a diol (A) containing not less than 70% by weight of a specific oxyalkylene glycol (A1); and a trihydric to hexahydric branched alcohol (B) having 3 to 12 carbon atoms. In the polycarbonate polyol, structural units derived from the branched alcohol (B) is contained in an amount of 0.005 to 5.0% by mole in the structural units derived from the polyhydric alcohol. A ratio of a structural unit (X1) represented by the following Formula (X1) in the structural units derived from the branched alcohol (B) is not higher than 50% by mole.Type: GrantFiled: June 21, 2019Date of Patent: March 21, 2023Assignee: Mitsubishi Chemical CorporationInventors: Yuta Hioki, Yoshikazu Kanamori, Kazunao Kusano, Kazuki Wakabayashi, Ryo Yamashita, Takayuki Yamanaka
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Patent number: 11591437Abstract: Provided is a polycarbonate polyol used as a raw material of a polyurethane that yields a polyurethane solution having good storage stability and exhibits excellent flexibility and solvent resistance. This polycarbonate polyol is a polycarbonate diol that includes structural units represented by the following Formulae (A) and (B), wherein, R1 and R2 each independently represent an alkyl group having 1 to 4 carbon atoms and, in this range of the number of carbon atoms, optionally have an oxygen atom, a sulfur atom, a nitrogen atom, a halogen atom, or a substituent containing these atoms; and R3 represents a linear aliphatic hydrocarbon having 3 or 4 carbon atoms. This polycarbonate diol has a molecular weight of 500 to 5,000, and the value of the following Formula (I) is 0.3 to 20.0: (Content ratio of branched-chain moiety in polymer)/(Content ratio of carbonate group in polymer)×100(%) (I).Type: GrantFiled: July 10, 2019Date of Patent: February 28, 2023Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Yoshikazu Kanamori, Yuta Hioki
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Publication number: 20220073673Abstract: The present invention relates to a polycarbonate diol comprising a structural unit derived from a compound represented by the following formula (A) and a structural unit derived from a compound represented by the following formula (B), wherein the hydroxyl value is from 20 to 450 mg-KOH/g: HO—R1—OH??(A) HO—R2—OH??(B) the glass transition temperature of said polycarbonate diol as measured by a differential operating calorimeter is ?30° C. or less and the average carbon number of a dihydroxy compound obtained by hydrolyzing said polycarbonate diol is from 3 to 5.5.Type: ApplicationFiled: November 19, 2021Publication date: March 10, 2022Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Kazunao KUSANO, Yoshikazu KANAMORI, Yoko NAKAGAWA, Kaori YANO
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Patent number: 11220572Abstract: The present invention relates to a polycarbonate diol comprising a structural unit derived from a compound represented by the following formula (A) and a structural unit derived from a compound represented by the following formula (B), wherein the hydroxyl value is from 20 to 450 mg-KOH/g: HO—R1—OH??(A) HO—R2—OH??(B) the glass transition temperature of said polycarbonate diol as measured by a differential operating calorimeter is ?30° C. or less and the average carbon number of a dihydroxy compound obtained by hydrolyzing said polycarbonate diol is from 3 to 5.5.Type: GrantFiled: February 28, 2018Date of Patent: January 11, 2022Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Kazunao Kusano, Yoshikazu Kanamori, Yoko Nakagawa, Kaori Yano
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Patent number: 10472465Abstract: The present invention relates to a method for producing a polycarbonate diol, comprising subjecting a compound represented by the following formula (A) containing from 0.01 to 1.0 wt % of an aldehyde derivative, a compound represented by the following formula (B), and a carbonate compound to polycondensation by a transesterification reaction in the presence of a catalyst to produce a polycarbonate diol having a number average molecular weight of 250 to 5,000: HO—(CH2)10—OH??(A) HO—R1—OH??(B) wherein in the formula (B), R1 represents a substituted or unsubstituted divalent alkylene group having a carbon number of 3 to 20, wherein the compound of the formula (A) is not included by the formula (B).Type: GrantFiled: November 22, 2016Date of Patent: November 12, 2019Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Kazunao Kusano, Kazuki Wakabayashi, Yoko Nakagawa, Yusuke Izawa, Yoshikazu Kanamori
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Publication number: 20190330421Abstract: Provided is a polycarbonate polyol used as a raw material of a polyurethane that yields a polyurethane solution having good storage stability and exhibits excellent flexibility and solvent resistance. This polycarbonate polyol is a polycarbonate diol that includes structural units represented by the following Formulae (A) and (B), wherein, R1 and R2 each independently represent an alkyl group having 1 to 4 carbon atoms and, in this range of the number of carbon atoms, optionally have an oxygen atom, a sulfur atom, a nitrogen atom, a halogen atom, or a substituent containing these atoms; and R3 represents a linear aliphatic hydrocarbon having 3 or 4 carbon atoms. This polycarbonate diol has a molecular weight of 500 to 5,000, and the value of the following Formula (I) is 0.3 to 20.0: (Content ratio of branched-chain moiety in polymer)/(Content ratio of carbonate group in polymer)×100(%) (I).Type: ApplicationFiled: July 10, 2019Publication date: October 31, 2019Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Yoshikazu KANAMORI, Yuta HIOKI
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Publication number: 20190315908Abstract: Provided is a polycarbonate polyol used as a raw material of a polyurethane that has an excellent balance of flexibility, mechanical strength and solvent resistance. The polycarbonate polyol includes structural units derived from a polyhydric alcohol and has a hydroxyl value of 20 to 450 mg KOH/g. The polyhydric alcohol includes: a diol (A) containing not less than 70% by weight of a specific oxyalkylene glycol (A1); and a trihydric to hexahydric branched alcohol (B) having 3 to 12 carbon atoms. In the polycarbonate polyol, structural units derived from the branched alcohol (B) is contained in an amount of 0.005 to 5.0% by mole in the structural units derived from the polyhydric alcohol. A ratio of a structural unit (X1) represented by the following Formula (X1) in the structural units derived from the branched alcohol (B) is not higher than 50% by mole.Type: ApplicationFiled: June 21, 2019Publication date: October 17, 2019Applicant: Mitsubishi Chemical CorporationInventors: Yuta HIOKI, Yoshikazu KANAMORI, Kazunao KUSANO, Kazuki WAKABAYASHI, Ryo YAMASHITA, Takayuki YAMANAKA
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Patent number: 10351657Abstract: The present invention aims to provide a polyester polyol having favorable reactivity and a favorable color tone, which can be used for obtaining a polyurethane having an excellent balance of flexibility, mechanical strength, and chemical resistance, and a method for producing the polyester polyol. The object can be achieved with a polyester polyol in which an aliphatic diol contains as a structural unit 1,10-decanediol derived from a biomass resource, and in which the aldehyde body content in the polyester polyol is 0.01 to 0.5% by weight, and a method for producing the polyester polyol.Type: GrantFiled: October 16, 2017Date of Patent: July 16, 2019Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Yoshikazu Kanamori, Shigeki Nitta, Kaori Yano, Takayuki Aoshima, Yuta Hioki
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Patent number: 10316130Abstract: The present invention relates to a polycarbonate diol comprising a structural unit derived from a compound represented by the following formula (A) and a structural unit derived from a compound represented by the following formula (B), wherein the hydroxyl value is from 20 to 450 mg-KOH/g: HO—R1—OH??(A) HO—R2—OH??(B) the glass transition temperature of said polycarbonate diol as measured by a differential operating calorimeter is ?30° C. or less and the average carbon number of a dihydroxy compound obtained by hydrolyzing said polycarbonate diol is from 3 to 5.5.Type: GrantFiled: June 26, 2015Date of Patent: June 11, 2019Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Kazunao Kusano, Yoshikazu Kanamori, Yoko Nakagawa, Kaori Yano
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Publication number: 20180186920Abstract: The present invention relates to a polycarbonate diol comprising a structural unit derived from a compound represented by the following formula (A) and a structural unit derived from a compound represented by the following formula (B), wherein the hydroxyl value is from 20 to 450 mg-KOH/g: HO—R1—OH??(A) HO—R2—OH??(B) the glass transition temperature of said polycarbonate diol as measured by a differential operating calorimeter is ?30° C. or less and the average carbon number of a dihydroxy compound obtained by hydrolyzing said polycarbonate diol is from 3 to 5.5.Type: ApplicationFiled: February 28, 2018Publication date: July 5, 2018Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Kazunao KUSANO, Yoshikazu KANAMORI, Yoko NAKAGAWA, Kaori YANO
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Publication number: 20180037692Abstract: The present invention aims to provide a polyester polyol having favorable reactivity and a favorable color tone, which can be used for obtaining a polyurethane having an excellent balance of flexibility, mechanical strength, and chemical resistance, and a method for producing the polyester polyol. The object can be achieved with a polyester polyol in which an aliphatic diol contains as a structural unit 1,10-decanediol derived from a biomass resource, and in which the aldehyde body content in the polyester polyol is 0.01 to 0.5% by weight, and a method for producing the polyester polyol.Type: ApplicationFiled: October 16, 2017Publication date: February 8, 2018Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Yoshikazu KANAMORI, Shigeki NITTA, Kaori YANO, Takayuki AOSHIMA, Yuta HIOKI
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Publication number: 20170073466Abstract: The present invention relates to a method for producing a polycarbonate diol, comprising subjecting a compound represented by the following formula (A) containing from 0.01 to 1.0 wt % of an aldehyde derivative, a compound represented by the following formula (B), and a carbonate compound to polycondensation by a transesterification reaction in the presence of a catalyst to produce a polycarbonate diol having a number average molecular weight of 250 to 5,000: HO—(CH2)10—OH??(A) HO—R1—OH??(B) wherein in the formula (B), R1 represents a substituted or unsubstituted divalent alkylene group having a carbon number of 3 to 20, wherein the compound of the formula (A) is not included by the formula (B).Type: ApplicationFiled: November 22, 2016Publication date: March 16, 2017Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Kazunao KUSANO, Kazuki WAKABAYASHI, Yoko NAKAGAWA, Yusuke IZAWA, Yoshikazu KANAMORI
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Publication number: 20150291724Abstract: The present invention relates to a polycarbonate diol comprising a structural unit derived from a compound represented by the following formula (A) and a structural unit derived from a compound represented by the following formula (B), wherein the hydroxyl value is from 20 to 450 mg-KOH/g: HO—R1—OH??(A) HO—R2—OH??(B) the glass transition temperature of said polycarbonate diol as measured by a differential operating calorimeter is ?30° C. or less and the average carbon number of a dihydroxy compound obtained by hydrolyzing said polycarbonate diol is from 3 to 5.5.Type: ApplicationFiled: June 26, 2015Publication date: October 15, 2015Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Kazunao KUSANO, Yoshikazu KANAMORI, Yoko NAKAGAWA, Kaori YANO