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.

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

IPC: H01M4/60 ,  H01B1/24 ,  C08L33/10 ,  C08L33/26 ,  C08L39/08 ,  H01M4/04 ,  H01M4/62 ,  H01M4/02

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.