Patent ID: 7253241

Claim:
A release polymer consisting of the reaction product of (a) from 1 to about 15 wt % of a fluorinated monomer selected from the group consisting of monomers according to the general formula: R f —X—OC(O)—C(R)=CH 2 wherein R f represents a perfluorinated aliphatic group having 3 or 4 carbon atoms, X is an organic divalent linking group, and R represents a hydrogen or methyl group; (b) from about 40 to about 70 wt % of an alkyl (meth)acrylate, wherein the alkyl group contains from 16 to 22 carbon atoms; (c)from about 3 to about 20 wt % of (meth)acrylic acid; (d)from about 20 to about 40 wt % acrylonitrile; and (e) from 0 to about 15 wt % of vinyl monomer, other than those of(a) through (d).