Patent ID: 8153756

Claim:
A fluorine-containing polymer comprising (A) repeating units derived from a fluorine-containing compound (a): CH 2 ═C(—X)—C(═O)—Y—[—CH 2 ) m —Z—] p —(CH 2 ) n —Rf (a) wherein X is a fluorine atom, a chlorine atom, a bromine atom, a iodine atom, a CFX 1 X 2 group (wherein X 1 and X 2 is a hydrogen atom, a fluorine atom or a chlorine atom), a cyano group, a linear or branched fluoroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted benzyl group, or a substituted or unsubstituted phenyl group; Y is —O— or —NH—; Z is —S— or —SO 2 —; Rf is a fluoroalkyl group having 1 to 21 carbon atoms; m is from 1 to 10, n is from 0 to 10, and p is 0 or 1.