Patent ID: 8080622

Claim:
A silicone prepolymer comprising: at least one silicone-containing residue having a structure represented by the formula: wherein R a represents hydrogen or methyl, and wherein A represents a siloxanyl group, wherein at least one A has a structure represented by the formula: wherein L represents a C 1 -C 20 alkyl residue or a C 6 -C 20 aryl residue; and wherein D represents a siloxanyl group having a structure represented by the formula: wherein E 1 to E 11 independently represent hydrogen, C 1 -C 20 alkyl residue, or C 6 -C 20 aryl residue; wherein h represents an integer of from 0 to 200; and wherein i, j, and k independently represent integers of from 0 to 20, with the proviso that h, i, j and k are not simultaneously zero; and at least one polymerizable residue having a structure represented by the formula: wherein R p represents hydrogen or methyl, and wherein P represents an organic group comprising at least one polymerizable moiety selected from a methacryloyloxy group, an acryloyloxy group, a methacryl amide group, an acryl amide group, a styryl group, a vinyl group, a vinyl carbonate group, a vinyl carbamate group, an allyl carbonate group, or an allyl carbamate group; wherein the prepolymer has a silicon content of from about 10% to about 30% by weight, of the prepolymer; and wherein the total of the polar silicone units is from about 50% to about 80% by weight, based on solid content of the prepolymer.