Patent ID: 7423074

Claim:
A copolymer that is the polymerization product of a monomeric mixture comprising a copolymer represented by the general formulae, M(*Dii*Diol*Dii*PS) x (*Dii*PS) y *Dii*M or M(*Dii*Diol*Dii*PS) x (*Dii*PS) y *Dii*Diol*Dii*M wherein: each M is independently a polymerizable ethylenically unsaturated radical; each Dii is independently a diradical residue of a diisocyanate; each Diol is independently a diradical residue of a diol having 1 to 10 carbon atoms; each PS is independently a diradical residue of a polysiloxane-diol or a polysiloxane diamine; each * is independently —NH—CO—NH—, —NH—COO— or —OCO—NH—; x is at least 2, and y is at least 1; and a hydrophilic comonomer and a monofunctional silicone-containing monomer.