Patents by Inventor Sho KATSUMATA
Sho KATSUMATA 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: 11732144Abstract: Provided is an antifouling coating composition, which can form a coating film having good hardness and good physical properties and having a wear degree appropriate for expressing a long-term antifouling effect, has a viscosity not being excessively high, and makes it possible to reduce a content of volatile organic compounds, and a polymer-containing composition which is suitable for obtaining the antifouling coating composition. The polymer-containing composition contains a (meth)acryl-based copolymer (A-1), in which the (meth)acryl-based copolymer (A-1) contains a constitutional unit (U11) or a constitutional unit (U12) having carboxylate forming an ionic bond with a divalent metal atom, and has a weight-average molecular weight of 1,000 to 5,000, and the polymer-containing composition has a coating film hardness (Martens hardness) equal to or higher than 2.5 N/mm2.Type: GrantFiled: February 4, 2021Date of Patent: August 22, 2023Assignee: Mitsubishi Chemical CorporationInventors: Kana Taniguchi, Sho Katsumata, Junichi Nakamura, Nobuaki Kanazawa
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Patent number: 11643489Abstract: First embodiment of a (meth)acrylic copolymer in the present invention includes following: a (meth)acrylic copolymer having at least one kind of constitutional unit selected from the group consisting of a constitutional unit (A1) having at least one kind of structure (I) selected from the group consisting of structures represented by the following formula (1), formula (2), or formula (3) and a constitutional unit (A2) having a triorganosilyloxycarbonyl group and a constitutional unit (B) derived from a macromonomer (b): (where, X represents —O—, —S—, or —NR14—, R14 represents a hydrogen atom or an alkyl group, R1 and R2 each represent a hydrogen atom or an alkyl group having from 1 to 10 carbon atoms, R3 and R5 each represent an alkyl group having from 1 to 20 carbon atoms, a cycloalkyl group, or an aryl group, and R4 and R6 each represent an alkylene group having from 1 to 10 carbon atoms).Type: GrantFiled: December 1, 2021Date of Patent: May 9, 2023Assignee: Mitsubishi Chemical CorporationInventors: Kana Taniguchi, Sho Katsumata, Junichi Nakamura, Masatoshi Ura, Yoshihiro Kamon, Takafumi Asai
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Patent number: 11499069Abstract: A (meth)acrylic copolymer of the present invention includes a constituent unit (B) derived from a polysiloxane block-containing polymerizable monomer (b) represented by Formula (b1). In Formula (b1), R30 represents a hydrogen atom or a methyl group, a represents an integer of 2 to 5, b represents a number of 0 to 50, c represents an integer of 0 to 18, d represents a number of 1 to 1000, e represents a number of 1 to 80, R31 to R39 each represents an alkyl group, an alkoxy group, a phenyl group, a substituted phenyl group, a phenoxy group, or a substituted phenoxy group.Type: GrantFiled: September 16, 2019Date of Patent: November 15, 2022Assignee: Mitsubishi Chemical CorporationInventors: Kana Taniguchi, Junichi Nakamura, Sho Katsumata
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Patent number: 11414508Abstract: A (meth)acrylic copolymer of the present invention includes at least one constituent unit (A) selected from the group consisting of a constituent unit (A1) having at least one structure (I) represented by Formula (1), Formula (2), or Formula (3), a constituent unit (A2) containing a triorganosilyloxycarbonyl group, and a constituent unit (A3) having at least one structure (III) represented by Formula (4) or Formula (5), a constituent unit (B) derived from a specific polysiloxane block-containing polymerizable monomer (b), and a constituent unit (C) derived from a macromonomer (c).Type: GrantFiled: September 25, 2019Date of Patent: August 16, 2022Assignee: Mitsubishi Chemical CorporationInventors: Kana Taniguchi, Junichi Nakamura, Sho Katsumata
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Publication number: 20220144987Abstract: First embodiment of a (meth)acrylic copolymer in the present invention includes following: a (meth)acrylic copolymer having at least one kind of constitutional unit selected from the group consisting of a constitutional unit (A1) having at least one kind of structure (I) selected from the group consisting of structures represented by the following formula (1), formula (2), or formula (3) and a constitutional unit (A2) having a triorganosilyloxycarbonyl group and a constitutional unit (B) derived from a macromonomer (b): (where, X represents —O—, —S—, or —NR14—, R14 represents a hydrogen atom or an alkyl group, R1 and R2 each represent a hydrogen atom or an alkyl group having from 1 to 10 carbon atoms, R3 and R5 each represent an alkyl group having from 1 to 20 carbon atoms, a cycloalkyl group, or an aryl group, and R4 and R6 each represent an alkylene group having from 1 to 10 carbon atoms).Type: ApplicationFiled: December 1, 2021Publication date: May 12, 2022Applicant: Mitsubishi Chemical CorporationInventors: Kana TANIGUCHI, Sho KATSUMATA, Junichi NAKAMURA, Masatoshi URA, Yoshihiro KAMON, Takafumi ASAI
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Publication number: 20210171784Abstract: Provided is an antifouling coating composition, which can form a coating film having good hardness and good physical properties and having a wear degree appropriate for expressing a long-term antifouling effect, has a viscosity not being excessively high, and makes it possible to reduce a content of volatile organic compounds, and a polymer-containing composition which is suitable for obtaining the antifouling coating composition. The polymer-containing composition contains a (meth)acryl-based copolymer (A-1), in which the (meth)acryl-based copolymer (A-1) contains a constitutional unit (U11) or a constitutional unit (U12) having carboxylate forming an ionic bond with a divalent metal atom, and has a weight-average molecular weight of 1,000 to 5,000, and the polymer-containing composition has a coating film hardness (Martens hardness) equal to or higher than 2.5 N/mm2.Type: ApplicationFiled: February 4, 2021Publication date: June 10, 2021Applicant: Mitsubishi Chemical CorporationInventors: Kana TANIGUCHI, Sho KATSUMATA, Junichi NAKAMURA, Nobuaki KANAZAWA
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Patent number: 10954394Abstract: Provided is an antifouling coating composition, which can form a coating film having good hardness and good physical properties and having a wear degree appropriate for expressing a long-term antifouling effect, has a viscosity not being excessively high, and makes it possible to reduce a content of volatile organic compounds, and a polymer-containing composition which is suitable for obtaining the antifouling coating composition. The polymer-containing composition contains a (meth)acryl-based copolymer (A-1), in which the (meth)acryl-based copolymer (A-1) contains a constitutional unit (U11) or a constitutional unit (U12) having carboxylate forming an ionic bond with a divalent metal atom, and has a weight-average molecular weight of 1,000 to 5,000, and the polymer-containing composition has a coating film hardness (Martens hardness) equal to or higher than 2.5 N/mm2.Type: GrantFiled: December 4, 2018Date of Patent: March 23, 2021Assignee: Mitsubishi Chemical CorporationInventors: Kana Taniguchi, Sho Katsumata, Junichi Nakamura, Nobuaki Kanazawa
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Publication number: 20210079232Abstract: The invention provides an antifouling paint composition comprising at least one compound (A) selected from the group consisting of compounds represented by Formula (1), Formula (2), and Formula (3); and a vinyl-based copolymer (B).Type: ApplicationFiled: November 25, 2020Publication date: March 18, 2021Applicant: Mitsubishi Chemical CorporationInventors: Sho KATSUMATA, Kana TANIGUCHI, Junichi NAKAMURA
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Publication number: 20200017617Abstract: A (meth)acrylic copolymer of the present invention includes at least one constituent unit (A) selected from the group consisting of a constituent unit (A1) having at least one structure (I) represented by Formula (1), Formula (2), or Formula (3), a constituent unit (A2) containing a triorganosilyloxycarbonyl group, and a constituent unit (A3) having at least one structure (III) represented by Formula (4) or Formula (5), a constituent unit (B) derived from a specific polysiloxane block-containing polymerizable monomer (b), and a constituent unit (C) derived from a macromonomer (c).Type: ApplicationFiled: September 25, 2019Publication date: January 16, 2020Applicant: Mitsubishi Chemical CorporationInventors: Kana TANIGUCHI, Junichi NAKAMURA, Sho KATSUMATA
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Publication number: 20200010697Abstract: A (meth)acrylic copolymer of the present invention includes a constituent unit (B) derived from a polysiloxane block-containing polymerizable monomer (b) represented by Formula (b1). In Formula (b1), R30 represents a hydrogen atom or a methyl group, a represents an integer of 2 to 5, b represents a number of 0 to 50, c represents an integer of 0 to 18, d represents a number of 1 to 1000, e represents a number of 1 to 80, R31 to R39 each represents an alkyl group, an alkoxy group, a phenyl group, a substituted phenyl group, a phenoxy group, or a substituted phenoxy group.Type: ApplicationFiled: September 16, 2019Publication date: January 9, 2020Applicant: Mitsubishi Chemical CorporationInventors: Kana TANIGUCHI, Junichi NAKAMURA, Sho KATSUMATA
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Publication number: 20190352514Abstract: Disclosed herein is an antifouling coating composition containing a resin composition and an antifouling agent, where the resin composition includes a polymer (A) containing at least one monomer-derived structural unit having the structure represented by formula (1), (2) or (3) below, and after the resin composition is stored at 40° C. for 30 days, the decomposition rate of the structure represented by formula (1), (2) or (3) in the polymer (A) is 20% or lower.Type: ApplicationFiled: August 1, 2019Publication date: November 21, 2019Applicant: Mitsubishi Chemical CorporationInventors: Sho Katsumata, Kana Taniguchi, Junichi Nakamura, Masatoshi Ura, Yoshihiro Kamon, Takafumi Asai, Ryuichi Ansai
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Publication number: 20190276682Abstract: Provided are a polymer, a resin composition, and an antifouling coating material composition which are capable of forming a coating film having both of water resistance and antifouling properties resulting from superhydrophilicity; a method for producing the polymer; a method for forming a structure for stabilizing a carbamate on a surface of a coating film using the polymer; and a method for regenerating a structure for stabilizing a carbamate on a surface of a coating film using the polymer. The polymer having a structure which reacts with CO2 in the presence of water and stabilizes a formed carbamate, in which Expression (1) is satisfied.Type: ApplicationFiled: April 30, 2019Publication date: September 12, 2019Applicants: Waseda University, Mitsubishi Chemical CorporationInventors: Takeo SUGA, Hiroyuki NISHIDE, Sho KATSUMATA, Kana TANIGUCHI, Junichi NAKAMURA, Tomokazu IWASAKI
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Publication number: 20190100660Abstract: Provided is an antifouling coating composition, which can form a coating film having good hardness and good physical properties and having a wear degree appropriate for expressing a long-term antifouling effect, has a viscosity not being excessively high, and makes it possible to reduce a content of volatile organic compounds, and a polymer-containing composition which is suitable for obtaining the antifouling coating composition. The polymer-containing composition contains a (meth)acryl-based copolymer (A-1), in which the (meth)acryl-based copolymer (A-1) contains a constitutional unit (U11) or a constitutional unit (U12) having carboxylate forming an ionic bond with a divalent metal atom, and has a weight-average molecular weight of 1,000 to 5,000, and the polymer-containing composition has a coating film hardness (Martens hardness) equal to or higher than 2.5 N/mm2.Type: ApplicationFiled: December 4, 2018Publication date: April 4, 2019Applicant: Mitsubishi Chemical CorporationInventors: Kana Taniguchi, Sho Katsumata, Junichi Nakamura, Nobuaki Kanazawa
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Publication number: 20180201797Abstract: First embodiment of a (meth)acrylic copolymer in the present invention includes following: a (meth)acrylic copolymer having at least one kind of constitutional unit selected from the group consisting of a constitutional unit (A1) having at least one kind of structure (I) selected from the group consisting of structures represented by the following formula (1), formula (2), or formula (3) and a constitutional unit (A2) having a triorganosilyloxycarbonyl group and a constitutional unit (B) derived from a macromonomer (b): (where, X represents —O—, —S—, or —NR14—, R14 represents a hydrogen atom or an alkyl group, R1 and R2 each represent a hydrogen atom or an alkyl group having from 1 to 10 carbon atoms, R3 and R5 each represent an alkyl group having from 1 to 20 carbon atoms, a cycloalkyl group, or an aryl group, and R4 and R6 each represent an alkylene group having from 1 to 10 carbon atoms).Type: ApplicationFiled: March 15, 2018Publication date: July 19, 2018Applicant: Mitsubishi Chemical CorporationInventors: Kana TANIGUCHI, Sho KATSUMATA, Junichi NAKAMURA, Masatoshi URA, Yoshihiro KAMON, Takafumi ASAI
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Publication number: 20180051179Abstract: A resin composition, formed to have a polymer (A) containing at least one monomer-derived structural unit having the structure represented by formula (1), (2) or (3) below, and after the resin composition is stored at 40° C. for 30 days, the decomposition rate of the structure represented by formula (1), (2) or (3) in the polymer (A) is 20% or lower.Type: ApplicationFiled: April 15, 2016Publication date: February 22, 2018Applicant: Mitsubishi Chemical CorporationInventors: Sho KATSUMATA, Kana TANIGUCHI, Junichi NAKAMURA, Masatoshi URA, Yoshihiro KAMON, Takafumi ASAI, Ryuichi ANSAI