| CPC H01B 1/24 (2013.01) [C01B 32/174 (2017.08); C01B 32/194 (2017.08); C08F 290/142 (2013.01); C08K 7/06 (2013.01); C09C 1/56 (2013.01); C09D 11/037 (2013.01); C09D 11/52 (2013.01); C09K 23/46 (2022.01); H01B 1/12 (2013.01); C01B 2202/22 (2013.01); C01B 2202/28 (2013.01); C01B 2204/22 (2013.01); C01B 2204/28 (2013.01); C01P 2006/22 (2013.01); C01P 2006/40 (2013.01); C08K 2201/001 (2013.01)] | 5 Claims |
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1. A carbon material dispersion comprising
at least one carbon material selected from the group consisting of carbon black, a carbon fiber, a carbon nanotube, graphite, and graphene;
an organic solvent; and
a polymeric dispersant,
wherein the polymeric dispersant is a polymer having:
3 to 55% by mass of a constituent unit (1) represented by the following formula (1),
45 to 90% by mass of a constituent unit (3) represented by the following formula (3), and
0.5 to 20% by mass of a constituent unit (4) connecting units comprising the constituent unit (1) and the constituent unit (3), relative to a total amount of all constituent units of the polymer as 100% by mass,
the polymeric dispersant has an amine value in a range of 100 mg KOH/g or less and a number average molecular weight in a range from 5,000 to 20,000, and
a monomer (4) forming the constituent unit (4) is at least one monomer selected from the group consisting of (meth)acrylic acid-based monomers and vinyl monomers:
 wherein R represents a hydrogen atom or a methyl group, A represents O or NH, B represents an ethylene group or a propylene group, R1 and R2 each independently represent a methyl group or an ethyl group, Ar represents a phenyl group, a naphthyl group, an anthracenyl group, or a pyrenyl group, X represents a chlorine atom, a bromine atom, bis(trifluoromethyl)sulfonimide, or bis(nonafluorobutanesulfonyl)imide, and p represents an arbitrary number of repetition,
wherein a monomer (1) forming the constituent unit (1) and a monomer (3) forming the constituent unit (3) each have a double bond so as to polymerize and form the constituent unit (1) and the constituent unit (3), respectively; and
 wherein R represents a hydrogen atom or a methyl group, A represents O or NH, Q represents an ethylene group or a methylethylene group, Y represents O, NHCOO, or NHCONH, m and n each independently represent an average number of repeating units of 0 or more and satisfy m+n=20 to 100, R3 represents a C1-18 alkyl group, aryl group, or alkylaryl group, and r represents an arbitrary number of repetition.
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