N-vinyl lactam copolymer and composition
AssigneeNippon Shokubai Co., Ltd.
InventorYui IKEMOTO
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Abstract
The present invention aims to provide an N-vinyl lactam copolymer and a composition each retaining an excellent ability to disperse carbon and excellent solubility in water but less dissolving in a carbonate electrolyte solvent. The present invention relates to an N-vinyl lactam copolymer containing: a structural unit (A) derived from an acid group-containing monomer salt; and a structural unit (B) derived from an N-vinyl lactam monomer, an amount of the structural unit (A) being 30% by mass or less based on a total amount of the structural unit (A) and the structural unit (B), the total amount being taken as 100% by mass, the N-vinyl lactam copolymer having a weight average molecular weight of 1,000 or more and 100,000 or less and a K value of 12 to 60 as determined by the Fikentscher method.
Claims15
An N-vinyl lactam copolymer comprising:
- a structural unit (A) derived from an acid group-containing monomer salt;
- and
- a structural unit (B) derived from an N-vinyl lactam monomer,
- an amount of the structural unit (A) being 30% by mass or less based on a total amount of the structural unit (A) and the structural unit (B), the total amount being taken as 100% by mass,
- the N-vinyl lactam copolymer having a weight average molecular weight of 1,000 or more and 100,000 or less and a K value of 12 to 60 as determined by the Fikentscher method, and
- the N-vinyl lactam monomer being N-vinyl-2-pyrrolidone.
A composition comprising:
- an N-vinyl lactam copolymer containing a structural unit (A) derived from an acid group-containing monomer salt and a structural unit (B) derived from an N-vinyl lactam monomer;
- and
- a carbon material.
Dependencies are inferred from the claim text.