Patents by Inventor Kazunao KUSANO
Kazunao KUSANO 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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Publication number: 20220372351Abstract: The present disclosure provides an adhesive composition that contains a polyester resin (A), wherein the polyester resin (A) contains a structural unit derived from at least one compound (a1) selected from the group consisting of a dimer acid compound and a dimer diol, and a structural unit derived from an aromatic compound (a2).Type: ApplicationFiled: July 29, 2022Publication date: November 24, 2022Applicant: Mitsubishi Chemical CorporationInventors: Hideaki Suzuki, Kazunao Kusano
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Publication number: 20220081506Abstract: Provided is a polyether polycarbonate diol, wherein the ratio of the total number of terminal alkoxy groups and terminal aryloxy groups to the total number of all terminal groups is 0.20% or more and 7.5% or less. Controlling the ratio of the total number of terminal alkoxy groups and terminal aryloxy groups to the total number of all terminal groups included in the polyether polycarbonate diol to fall within the preferable range enables a polyurethane having an intended molecular weight to be produced while the occurrence of rapid polymerization reaction is reduced.Type: ApplicationFiled: November 22, 2021Publication date: March 17, 2022Applicant: Mitsubishi Chemical CorporationInventors: Yusuke IZAWA, Ryo YAMASHITA, Mitsuharu KOBAYASHI, Kazunao KUSANO, Shohei TANIGUCHI
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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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Publication number: 20210115191Abstract: The present invention provides a novel polycarbonate diol and a polyurethane using the polycarbonate diol as raw materials. The novel polycarbonate diol produces polycarbonate diol-based polyurethane which has a high degree of hardness, superior abrasion resistance, and superior hydrophilicity, and is usable for an application such as a paint, a coating agent, a synthetic leather, an artificial leather, and a highly-functional elastomers, or the like. The present invention also provides an active-energy radiation curable polymer composition giving a cured film having a superior contamination resistance and high degree of hardness. The present invention is obtained, for example, by reacting specific two types of diols with diester carbonate in the presence of a transesterification catalyst being a compound using a metal of Group 1 or 2 on the periodic table.Type: ApplicationFiled: December 22, 2020Publication date: April 22, 2021Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Haruhiko KUSAKA, Kazuki WAKABAYASHI, Masanori YAMAMOTO, Kazunao KUSANO, Hiroto ITO, Takashi KOMAYA, Teruhiko OHARA, Kentaro UCHINO, Haruo IIDUKA
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Patent number: 10907012Abstract: A novel polycarbonate diol is useful as a raw material for producing a polycarbonate diol-based polyurethane with a high degree of hardness, superior abrasion resistance, and superior hydrophilicity. The polyurethane is useful in paints, coating agents, synthetic leathers, artificial leathers, and highly-functional elastomers, or the like. The polycarbonate diol is also useful for producing an active-energy radiation curable polymer composition giving a cured film having superior contamination resistance and high degree of hardness. The curable polymer composition contains a urethane(meth)acrylate oligomer obtained from the polycarbonate diol. The polycarbonate diol is obtained, for example, by reacting two specific types of diols with diester carbonate in the presence of a transesterification catalyst. The catalyst has a metal of Group 1 or 2 on the periodic table. A metal content of the transesterification catalyst is 100 weight ppm or less.Type: GrantFiled: October 15, 2012Date of Patent: February 2, 2021Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Haruhiko Kusaka, Kazuki Wakabayashi, Masanori Yamamoto, Kazunao Kusano, Hiroto Ito, Takashi Komaya, Teruhiko Ohara, Kentaro Uchino, Haruo Iiduka
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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: 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: 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: 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