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公开(公告)号:US11894559B2
公开(公告)日:2024-02-06
申请号:US17602538
申请日:2019-12-27
Applicant: Kao Corporation
Inventor: Akito Itoi , Yutaro Kinoshita , Atsushi Hiraishi , Takahiro Yano , Akihiro Koyama
IPC: H01M4/525 , H01B1/24 , C08K3/04 , H01M4/62 , C08F220/20 , C08F220/68 , C08L27/16 , B82Y30/00 , B82Y40/00 , H01M4/02
CPC classification number: H01M4/625 , C08F220/20 , C08F220/68 , C08K3/041 , C08L27/16 , H01B1/24 , H01M4/525 , H01M4/623 , B82Y30/00 , B82Y40/00 , C08L2203/20 , H01M2004/028
Abstract: The present invention relates to a dispersant composition for carbon nanotubes, containing: a copolymer that includes a structural unit A represented by the following general formula (1) and a structural unit B represented by the following general formula (2); and a solvent, wherein the content of the structural unit B in all structural units of the copolymer is 20 mass % or more. In the following formulae, R1, R2, R3, R5, R6, and R7 are the same or different from each other and are each a hydrogen atom, a methyl group, or an ethyl group, R4 is a hydrocarbon group having 16 to 30 carbon atoms, R8 is a linear or branched alkylene group having 2 to 3 carbon atoms, X1 is on oxygen atom or NH, X2 is an oxygen atom, p is the number of 1 to 8, and R9 is a hydrogen atom, a methyl group, or an ethyl group.
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公开(公告)号:US11891502B2
公开(公告)日:2024-02-06
申请号:US17602580
申请日:2019-12-27
Applicant: KAO CORPORATION
Inventor: Yutaro Kinoshita , Akito Itoi , Atsushi Hiraishi , Takahiro Yano , Akihiro Koyama
CPC classification number: C08L33/10 , C08L33/26 , C08L39/08 , H01B1/24 , H01M4/0416 , H01M4/625 , H01M2004/028
Abstract: The present invention relates to a dispersant for a positive electrode of a power storage device. The dispersant is a copolymer that contains a constitutional unit A represented by the following general formula (1) and at least one constitutional unit B selected from the group consisting of a constitutional unit B1 represented by the following general formula (2) and a constitutional unit B2 represented by the following general formula (3). The total content of the constitutional unit A and the constitutional unit B in the copolymer is 80% by mass or more. The content of the constitutional unit A in all constitutional units of the copolymer is 35% by mass or more.
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