Patents Assigned to TATSUTA CHEMICAL CO., LTD.
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Patent number: 11685827Abstract: A polyvinyl chloride composition for powder molding includes a polyvinyl chloride (A) an amount of 100 parts by mass, a plasticizer in an amount of 110 parts by mass or more and 150 parts by mass or less, and an acrylic polymer in an amount of 4 parts by mass or more and 23 parts by mass or less. The polyvinyl chloride (A) has an average particle diameter of 50 ?m or more and 500 ?m or less and an average degree of polymerization of 1,350 or more. The acrylic polymer has an average particle diameter of 0.01 ?m or more and 10 ?m or less and contains a constitutional unit derived from a (meth) acrylic ester in an amount of 50 mass % or more.Type: GrantFiled: October 12, 2018Date of Patent: June 27, 2023Assignees: KANEKA CORPORATION, TATSUTA CHEMICAL CO., LTD.Inventors: Kentaro Takesada, Kohei Hosomi
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Patent number: 11643541Abstract: A composition of polyvinyl chloride for powder molding may include a polyvinyl chloride (A), a polyvinyl chloride (B), and a phosphate, among others. The polyvinyl chloride (A) may have an average particle diameter of 50 to 500 ?m, and the polyvinyl chloride (B) may have an average particle diameter of 0.01 ?m or more and less than 50 ?m. An average polymerization degree of the polyvinyl chloride (A) may be 1350 or more, and the phosphate may comprise a polyoxyalkylene alkyl phosphate.Type: GrantFiled: August 21, 2018Date of Patent: May 9, 2023Assignees: KANEKA CORPORATION, TATSUTA CHEMICAL CO., LTD.Inventors: Kentaro Takesada, Nobuyuki Shimizu
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Patent number: 11312848Abstract: The present invention relates to a powder slush molded body of a polyvinyl chloride composition, the polyvinyl chloride composition containing a polyvinyl chloride, a plasticizer, and an acrylic polymer. The polyvinyl chloride composition contains the plasticizer in an amount of 110 parts by mass or more and 150 parts by mass or less with respect to 100 parts by mass of the polyvinyl chloride. When a cross section of the powder slush molded body extending in parallel with a thickness direction is observed under an optical microscope using reflected light, irregular scale-like polyvinyl chloride particles having a long diameter of 30 ?m or more and 500 ?m or less are continuous with one another via interfacial portions, and the number of aggregated particles of the acrylic polymer having a long diameter of 30 ?m or more and 100 ?m or less is 10 particles/mm2 or less.Type: GrantFiled: October 12, 2018Date of Patent: April 26, 2022Assignees: KANEKA CORPORATION, TATSUTA CHEMICAL CO., LTD.Inventors: Kentaro Takesada, Kohei Hosomi
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Patent number: 11312849Abstract: A composition of polyvinyl for powder molding may include a polyvinyl chloride (A), a polyvinyl chloride (B), a plasticizer, and an alkyl phosphate. The polyvinyl chloride (A) may have an average particle diameter of 50 ?m to 500 ?m, and the polyvinyl chloride (B) may have an average particle diameter of 0.01 ?m or more and less than 50 ?m. An average polymerization degree of the polyvinyl chloride (A) may be 1350 or more, the alkyl phosphate may comprise a mono-alkyl phosphate, and the number of carbon atoms of an alkyl group in the alkyl phosphate may be 5 or more.Type: GrantFiled: August 21, 2018Date of Patent: April 26, 2022Assignees: KANEKA CORPORATION, TATSUTA CHEMICAL CO., LTD.Inventors: Kentaro Takesada, Nobuyuki Shimizu, Shigehiro Kanou
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Publication number: 20210179833Abstract: A composition of polyvinyl chloride for powder molding may include a polyvinyl chloride (A), a polyvinyl chloride (B), and a phosphate, among others. The polyvinyl chloride (A) may have an average particle diameter of 50 to 500 and the polyvinyl chloride (B) may have an average particle diameter of 0.01 ?m or more and less than 50 An average polymerization degree of the polyvinyl chloride (A) may be 1350 or more, and the phosphate may comprise a polyoxyalkylene alkyl phosphate.Type: ApplicationFiled: August 21, 2018Publication date: June 17, 2021Applicants: KANEKA CORPORATION, TATSUTA CHEMICAL CO., LTD.Inventors: Kentaro Takesada, Nobuyuki Shimizu
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Publication number: 20200332106Abstract: The present invention relates to a powder slush molded body of a polyvinyl chloride composition, the polyvinyl chloride composition containing a polyvinyl chloride, a plasticizer, and an acrylic polymer. The polyvinyl chloride composition contains the plasticizer in an amount of 110 parts by mass or more and 150 parts by mass or less with respect to 100 parts by mass of the polyvinyl chloride. When a cross section of the powder slush molded body extending in parallel with a thickness direction is observed under an optical microscope using reflected light, irregular scale-like polyvinyl chloride particles having a long diameter of 30 ?m or more and 500 ?m or less are continuous with one another via interfacial portions, and the number of aggregated particles of the acrylic polymer having a long diameter of 30 ?m or more and 100 ?m or less is 10 particles/mm2 or less.Type: ApplicationFiled: October 12, 2018Publication date: October 22, 2020Applicants: KANEKA CORPORATION, TATSUTA CHEMICAL CO., LTD.Inventors: Kentaro Takesada, Kohei Hosomi
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Publication number: 20200291215Abstract: A composition of polyvinyl for powder molding may include a polyvinyl chloride (A), a polyvinyl chloride (B), a plasticizer, and an alkyl phosphate. The polyvinyl chloride (A) may have an average particle diameter of 50 ?m to 500 ?m, and the polyvinyl chloride (B) may have an average particle diameter of 0.01 ?m or more and less than 50 ?m. An average polymerization degree of the polyvinyl chloride (A) may be 1350 or more, the alkyl phosphate may comprise a mono-alkyl phosphate, and the number of carbon atoms of an alkyl group in the alkyl phosphate may be 5 or more.Type: ApplicationFiled: August 21, 2018Publication date: September 17, 2020Applicants: KANEKA CORPORATION, TATSUTA CHEMICAL CO., LTD.Inventors: Kentaro Takesada, Nobuyuki Shimizu, Shigehiro Kanou
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Publication number: 20200255644Abstract: The present invention relates to a polyvinyl chloride composition for powder molding including a polyvinyl chloride (A) in an amount of 100 parts by mass, a plasticizer in an amount of 110 parts by mass or more and 150 parts by mass or less, and an acrylic polymer in an amount of 4 parts by mass or more and 23 parts by mass or less. The polyvinyl chloride (A) has an average particle diameter of 50 ?m or more and 500 ?m or less and an average degree of polymerization of 1,350 or more. The acrylic polymer has an average particle diameter of 0.01 ?m or more and 10 ?m or less and contains a constitutional unit derived from a (meth)acrylic ester in an amount of 50 mass % or more. The (meth)acrylic ester includes at least one selected from the group consisting of (meth)acrylic ester of an aliphatic alcohol having two or more carbon atoms and a (meth)acrylic ester of an aromatic alcohol.Type: ApplicationFiled: October 12, 2018Publication date: August 13, 2020Applicants: KANEKA CORPORATION, TATSUTA CHEMICAL CO., LTD.Inventors: Kentaro Takesada, Kohei Hosomi
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Patent number: 9434096Abstract: Provided are a decorative resin sheet that sufficiently brings together embossing property and embossment-retaining property, and a molded resin article on which an embossment excellent in design is formed and a method of manufacturing the molded resin article. The method of manufacturing a molded resin article includes the steps of: providing a resin sheet having a mold layer containing a polyolefin-based resin as a main component, followed by formation of an embossment on the resin sheet so that the embossment is formed on a surface of the mold layer; crosslinking the mold layer on which the embossment is formed so that a 100% modulus of the resin sheet at 200° C. becomes 0.Type: GrantFiled: September 6, 2011Date of Patent: September 6, 2016Assignees: KANEKA CORPORATION, TATSUTA CHEMICAL CO., LTD.Inventors: Koichi Yamashita, Shigehiro Kanou, Masami Nishikawa, Kaoru Yaguchi, Fumihito Tonomura
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Publication number: 20130216782Abstract: Provided are a decorative resin sheet that sufficiently brings together embossing property and embossment-retaining property, and a molded resin article on which an embossment excellent in design is formed and a method of manufacturing the molded resin article. The method of manufacturing a molded resin article includes the steps of: providing a resin sheet having a mold layer containing a polyolefin-based resin as a main component, followed by formation of an embossment on the resin sheet so that the embossment is formed on a surface of the mold layer; crosslinking the mold layer on which the embossment is formed so that a 100% modulus of the resin sheet at 200° C. becomes 0.Type: ApplicationFiled: September 6, 2011Publication date: August 22, 2013Applicants: TATSUTA CHEMICAL CO., LTD., KANEKA CORPORATIONInventors: Koichi Yamashita, Shigehiro Kanou, Masami Nishikawa, Kaoru Yaguchi, Fumihito Tonomura