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Patent Agency Ranking
公开(公告)号：US20210151763A1
公开(公告)日：2021-05-20
申请号：US16621567
申请日：2018-06-13
Applicant: DENKA COMPANY LIMITED
Inventor： Takuya NARUTOMI , Jun WATANABE , Shigeru SUZUKI
Abstract: An object of the present invention is to provide a composition for a positive electrode having high binding properties and high flexibility. A composition for a positive electrode, comprising: a graft copolymer-based resin; a polyvinylidene fluoride-based resin, wherein the graft copolymer-based resin includes a graft copolymer in which a monomer, having (meth)acrylonitrile as a main component, is graft-copolymerized with a polyvinyl alcohol. The graft copolymer-based resin optionally further includes at least one of a (meth)acrylonitrile-based non-graft polymer and a polyvinyl alcohol homopolymer. And, a slurry for a positive electrode comprising the composition. A positive electrode comprising a metal foil and a coating film of the slurry. The composition preferably has a mass ratio of the graft copolymer-based resin and the polyvinylidene fluoride resin, which is: graft copolymer-based resin/polyvinylidene fluoride-based resin=2/8 to 8/2.
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公开(公告)号：US20200207898A1
公开(公告)日：2020-07-02
申请号：US16622513
申请日：2018-06-13
Applicant: DENKA COMPANY LIMITED
Inventor： Soichiro NAKANISHI , Takuya NARUTOMI , Kyoichi INOUE , Shigeru SUZUKI , Jun WATANABE
IPC: C08F261/04 , C08K3/04 , C08L51/00 , H01M10/0525 , H01M4/62 , H01M4/525 , H01M4/131 , H01M4/505
Abstract: An object of the present invention is to provide a composition having flexibility. A composition comprising a graft copolymer in which a monomer, including a (meth) acrylonitrile and a (meth) acrylic acid ester as a main monomer, graft-copolymerizes to a backbone polymer having a polyvinyl alcohol, wherein the polyvinyl alcohol has a saponification degree of 50 to 100 mol %, a content of the composition of the polyvinyl alcohol is 5 to 50% by mass, a total content of the (meth) acrylonitrile monomer unit and the (meth) acrylic acid ester monomer unit is 50 to 95% by mass, a content of the (meth) acrylonitrile monomer unit in a total of 100% by mass of the (meth) acrylonitrile monomer unit and the (meth)acrylate monomer unit is 20 to 95% by mass, a content of the (meth)acrylate monomer unit in a total of 100% by mass of the (meth) acrylonitrile monomer unit and the (meth)acrylate monomer unit is 5 to 80% by mass, the (meth) acrylic acid ester is a monomer whose homopolymer has a glass transition temperature of 150 to 300 K.
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公开(公告)号：US20190027756A1
公开(公告)日：2019-01-24
申请号：US16080938
申请日：2017-03-08
Applicant: DENKA COMPANY LIMITED
Inventor： Takuya NARUTOMI , Jun WATANABE , Shigeru SUZUKI
IPC: H01M4/62 , H01M10/0525 , H01M4/134 , H01M4/133 , C08L51/00
Abstract: Provided is a binder composition for negative electrode that has good binding property with an active material and a metal foil and is superior in reduction resistance. A binder composition for negative electrode comprising a graft copolymer obtained by graft copolymerizing, with polyvinyl alcohol, a monomer containing (meth)acrylonitrile as a main component, wherein the polyvinyl alcohol has an average degree of polymerization of 300 to 3000; the polyvinyl alcohol has a saponification degree of 70 to 100 mol %; the graft copolymer has a polyvinyl alcohol amount of 10 to 90 mass %; and the graft copolymer has a poly(meth)acrylonitrile amount of 90 to 10 mass %.
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公开(公告)号：US20180358624A1
公开(公告)日：2018-12-13
申请号：US15774541
申请日：2016-08-26
Applicant: Denka Company Limited
Inventor： Takuya NARUTOMI , Jun WATANABE , Shigeru SUZUKI
IPC: H01M4/62 , C08F261/04 , C08K3/04 , H01M4/525 , H01M4/505 , H01M4/131 , H01M4/66 , H01M10/0525
CPC classification number: H01M4/622 , C08F261/04 , C08K3/04 , C08K2201/001 , C08L51/06 , H01M4/0404 , H01M4/131 , H01M4/505 , H01M4/525 , H01M4/625 , H01M4/661 , H01M10/0525 , H01M2004/028 , Y02E60/122 , Y02T10/7011 , C08F220/44 , C08L33/20
Abstract: A binder composition for positive electrode with superior oxidation resistance is provided. A slurry for positive electrode, a positive electrode, and a lithium ion secondary battery manufactured by using the binder composition is provided. A binder composition for positive electrode including a graft copolymer in which a monomer containing acrylonitrile as a main component is graft copolymerized with polyvinyl alcohol having an average degree of polymerization of 300 to 3000 and a saponification degree of 70 to 100 mol %, is provided. Further, a slurry for positive electrode includes the binder composition for positive electrode, a positive electrode active material, and a conductive assistant. In addition, a lithium ion secondary battery is manufactured using a positive electrode made with the slurry for positive electrode and a positive electrode.
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公开(公告)号：US20160376383A1
公开(公告)日：2016-12-29
申请号：US15038952
申请日：2014-11-25
Applicant: DENKA COMPANY LIMITED
Inventor： Naoya NODA , Shigeru SUZUKI , Ryochi SUZUKI
Abstract: Provided is a sulfur-modified polychloroprene that generates a smaller amount of nitrosamine compounds during kneading or curing operation. A sulfur-modified polychloroprene, comprising functional groups having a structure represented by Chemical Formula I (in Chemical Formula I, R0 represents an alkyl group having 1 to 4 carbon atoms and x is an integer of 2 to 8) in an amount of 0.05 to 0.5 mass %: —Sx—C(═S)═O—Ro I
Abstract translation: 提供了在捏合或固化操作期间产生较少量的亚硝胺化合物的硫改性聚氯丁二烯。 硫化改性聚氯丁二烯，其含有由化学式I（化学式I表示的结构，R 0表示碳原子数为1〜4的烷基，x为2〜8的整数）的官能团，为0.05 至0.5质量％：€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ-SX -C（= S）-C）-R 0€ƒ€ƒ€ƒ€ƒI
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