Patent ID: 8124668
Filing Date: 2012-02-28
Classification: C08F,G02B

Abstract:
1. An ocular lens material comprising at least one kind of a compound (A) having an ethylenically unsaturated group and polydimethylsiloxane structure through a urethane bond; at least one kind of a pyrrolidone derivative (B) selected from the group consisting of 1-alkyl-3-methylene-2-pyrrolidone, 1-alkyl-5-methylene-2-pyrrolidone, and 5-alkyl-3-methylene-2-pyrrolidone; silicone compound (C) being tris(trimethylsiloxy)silylpropyl(meth)acrylate; and an N-substituted acrylamide (D), wherein an oxygen permeability coefficient (Dk) of the ocular lens material is not less than 51 (×10 wherein a water content of the ocular lens material is 32% to 55% by weight.