SOFT OCULAR LENS MATERIAL

摘要

A soft ocular lens material made of a copolymer consisting essentially of: (A) from 5 to 70 parts by weight of a fluorine-containing (meth)acrylate; (B) from 5 to 60 parts by weight of an alkyl (meth)acrylate; (C) from 3 to 45 parts by weight of a polysiloxane macromonomer having polymerizable groups at both terminals, of the formula I: wherein each of Y<1><1> and Y<1><2> independently represents an acryloyl group, a methacryloyl group, a vinyl group or an allyl group; each of X<1><1> and X<1><2> independently represents a covalent bond, an oxygen atom or an alkylene glycol group; each of R<1><1> and R<1><2> independently represents a linear or branched alkylene group having from 1 to 6 carbon atoms; each of R<1><3>, R<1><4>, R<1><5>, R<1><6>, R<1><7> and R<1><8> independently represents an alkyl group having from 1 to 3 carbon atoms or a phenyl group; i is an integer of from 1 to 1500; and j is an integer of from 0 to 1499 (provided that i+j is at most 1500); and (D) from 3 to 40 parts by weight of a polysiloxane macromonomer having polymerizable groups bonded via one or two urethane bonds to the siloxane main chain, of the formula II: wherein each of Y<2><1> and Y<2><2> independently represents a group selected from the group consisting of an acryloyloxy group, a methacryloyloxy group, a vinyl group and an allyl group; each of R<3><1> and R<3><4> independently represents a linear or branched alkylene group having from 2 to 6 carbon atoms; each of X<2><1> and X<2><2> independently represents a covalent bond, an oxygen atom or an alkylene glycol group; each of R<3><2> and R<3><3> independently represents a linear or branched alkylene group having from 1 to 6 carbon atoms; each of R<2><3>, R<2><4>, R<2><5>, R<2><6>, R<2><7> and R<2><8> independently represents an alkyl group having from 1 to 3 carbon atoms or a phenyl group; each of E<2><1> and E<2><2> independently represents -NHCO- (provided that in this case, each of X<2><1> and X<2><2> is a covalent bond, E<2><1> forms a urethane bond together with X<2><5>, and E<2><2> forms a urethane bond together with X<2><6>) or a bivalent group derived from a diisocyanate selected from the group consisting of saturated aliphatic, alicyclic and aromatic diisocyanates (provided that in this case, each of X<2><1> and X<2><2> independently represents an oxygen atom or an alkylene glycol group, E<2><1> forms a urethane bond together With X<2><1> and X<2><5>, and E<2><2> forms a urethane bond together with X<2><2> and X<2><6>); each of X<2><5> and X<2><6> independently represents an oxygen atom, an alkylene glycol or a group represented by the formula V: wherein R<4><1> is a trivalent hydrocarbon group having from 1 to 6 carbon atoms; Y<2><3> represents a group selected from the group consisting of an acryloyloxy group, a methacryloyloxy group, a vinyl group and a allyl group; R<3><6> represents a linear or branched alkylene group having from 2 to 6 carbon atoms; X<2><3> represents a covalent bond, an oxygen atom or an alkylene glycol group; E<2><3> represents -NHCO- (provided that in this case, X<2><3> is a covalent bond) or a bivalent group derived from a diisocyanate selected from the group consisting of saturated aliphatic, alicyclic and aromatic diisocyanates (provided that in this case, X<2><3> is an oxygen atom or an alkylene glycol group), which forms a urethane bond together with X<2><3> and the adjacent oxygen atom bonded to R<4><1>; a is an integer of from 1 to 1500; and b is an integer of from 0 to 1499, provided a+b