Polymer for contact lens and contact lens made thereof

摘要

A polymerization product suitable for contact lenses comprising (a) an organosiloxane monomer having the following general formula <IMAGE> [I] <IMAGE> wherein n is an integer of 1 to 3, X is -(CH2)p-O]q in which p is an integer of 2 to 4 and q is 0 or an integer of 1 to 3, and Y1, Y2 and Y3 are methyl group or -O-Si-(CH3)3, and (b) a hydrophobic methacrylic acid alkyl ester monomer. The polymerization product and cross-linked polymerization product have excellent oxygen permeability and proper hydrophilic property and are substantially water-nonabsorptive, and contact lenses made thereof can be comfortably worn continuously for a long period of time.