Highly water-absorptive ocular lens material

摘要

A highly water-absorptive ocular lens material obtained by saponification for hydrophilic treatment of a copolymer composed essentially of: (A) from 2 to 30 parts by weight of a (meth)acrylate polymer having at least one polymerizable group per molecule on an average obtained by copolymerizing (a) an alkyl (meth)acrylate monomer and (b) a monomer having at least two polymerizable groups per molecule, as the main components; (B) from 70 to 98% by weight of a fatty acid vinyl ester; and (C) from 0.02 to 3.0 parts by weight of a cross linking agent, provided that the total amount of polymer (A) and monomer (B) is 100 parts by weight.