Patent ID: 8022156

Claim:
A fluorine-containing polymer comprising repeating units derived from: (A) a monomer which comprises a fluorine-containing monomer of the formula: wherein X is a hydrogen atom, an linear or branched alkyl group having 1 to 21 carbon atoms, a fluorine atom, a chlorine atom, a bromine atom, a iodide atom, a CFX 1 X 2 group (wherein X 1 and X 2 is a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom or a iodide atom.), a cyano group, a linear or branched fluoroalkyl group having 1 to 21 carbon atoms, a substituted or unsubstituted benzyl group, or a substituted or unsubstituted phenyl group, Y is an aliphatic group having 1 to 10 carbon atoms, an aromatic or cycloaliphatic group having 6 to 10 carbon atoms, a —CH 2 CH 2 N(R 1 )SO 2 — group (wherein R 1 is an alkyl group having 1 to 4 carbon atoms) or —CH 2 CH(OY 1 )CH 2 — group (wherein Y 1 is a hydrogen atom or an acetyl group), and Rf is a linear or branched fluoroalkyl group having 1 to 21 carbon atoms, wherein the fluorine-containing polymer comprises an organopolysiloxane moiety derived from (B) a mercapto group-containing organopolysiloxane, and also comprises repeating units derived from an olefinically unsaturated monomer (C′) containing an acid phosphate ester, phosphonic acid or acid phosphonate ester group.