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：US12187910B2

公开(公告)日：2025-01-07

申请号：US18031213

申请日：2021-10-06

Applicant: Kao Corporation

Inventor： Akito Itoi ,  Kazuo Oki ,  Kyoichi Shirota

IPC: C09D133/06 ,  C08F220/18 ,  C08K3/04 ,  C08K5/17 ,  C09D5/26 ,  C09D7/20 ,  C09D7/45 ,  C09D7/61 ,  C09D7/63 ,  H01M4/02 ,  H01M4/62

Abstract: An aspect of the present disclosure relates to a dispersant composition for an electrode of a power storage device. The dispersant composition contains an acrylic polymer (A), a compound (B) represented by the following formula (1), and an organic solvent (C). The acrylic polymer (A) contains a constitutional unit a represented by the following formula (3). In the formula (1), R1 represents a group represented by the following formula (2), and R2 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or —CH2CH2—OH. In the formula (2), R3, R4, R5, and R6 are the same or different and represent a hydrogen atom, a methyl group, or —CH2OH.

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.

公开(公告)号：US10852655B2

公开(公告)日：2020-12-01

申请号：US16331297

申请日：2017-09-15

Applicant: Kao Corporation

Inventor： Nobumichi Kamiyoshi ,  Yuri Nannichi ,  Kunihiro Kano ,  Akito Itoi ,  Tatsuya Yamada

IPC: G03G9/135 ,  G03G9/125 ,  G03G9/13 ,  G03G15/10 ,  G03G15/20

Abstract: A liquid developer containing a resin binder, a colorant, a dispersant, and an insulating liquid, wherein the resin binder contains a resin having an acidic group, and wherein the dispersant contains a dispersant X having at least one basic nitrogen-containing group selected from the group consisting of an amino group, an imino group, a cyano group, an azo group, a diazo group, and an azide group, and wherein a melting point of the dispersant X is 34° C. or higher; and a method for printing a fused image using the liquid developer. The liquid developer of the present invention is suitably used in development or the like of latent images formed in, for example, electrophotography, electrostatic recording method, electrostatic printing method or the like.