Kao Corporation

Yutaro Kinoshita

Akito Itoi

Atsushi Hiraishi

Akihiro Koyama

Takahiro Yano

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, R, R, R, R, R, and Rare the same or different from each other and are each a hydrogen atom, a methyl group, or an ethyl group, Ris a hydrocarbon group having 16 to 30 carbon atoms, Ris a linear or branched alkylene group having 2 to 3 carbon atoms, Xis on oxygen atom or NH, Xis an oxygen atom, p is the number of 1 to 8, and Ris a hydrogen atom, a methyl group, or an ethyl group.

Dispersant composition for carbon nanotube

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 Brepresented by the following general formula (2) and a constitutional unit Brepresented 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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Wakayama, Japan

Yutaro Kinoshita