Patent ID: 8466227

Claim:
Crosslinked fluorine-containing elastomer fine particles (D3) obtained by crosslinking particles (A3) of a fluorine-containing elastomer (a3) comprising a structural unit derived from an ethylenically unsaturated monomer comprising at least one fluoroolefin and a structural unit derived from a monomer represented by the formula (3c): CY 1 2 ═CY 2 R f 1 X 1 (3c) wherein Y 1 and Y 2 are fluorine atom, hydrogen atom or —CH 3 ; R f 1 is a linear or branched fluoroalkylene or perfluoroalkylene group which may have an ether linkage-formable oxygen atom; X 1 is iodine atom or bromine atom; and wherein an average particle size of the crosslinked fluorine-containing elastomer fine particles (D3) is from 0.01 to 0.5 μm.