Patent ID: 11919983
Assignee: KUREHA CORPORATION
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  H  Y | IPC C  H

Claim 0:
1. A copolymer particle comprising vinylidene fluoride copolymer having a constituent unit derived from vinylidene fluoride, and a constituent unit derived from a compound having an oxygen atom-containing functional group, wherein the vinylidene fluoride copolymer particle has a surface and a core which each contain vinylidene fluoride copolymer, and
a ratio of oxygen atom of the vinylidene fluoride copolymer in the surface of the vinylidene fluoride copolymer particle is higher than a ratio of oxygen atom of the vinylidene fluoride copolymer in the core of the vinylidene fluoride copolymer particle.