Patent EP-0379146-A2 (EP)
Inventor: TOYOSHIMA NOBUYUKI MENICON CO
IPC: C08F230/08
Filed: 1990-01-16
Abstract: 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 Y¹¹ and Y¹² independently represents an acryloyl group, a methacryloyl group, a vinyl group or an allyl group; each of X¹¹ and X¹² independently represents a covalent bond, an oxygen atom or an alkylene glycol group; each of R¹¹ and R¹² independently represents a linear or branched alkylene group having from 1 to 6 carbon atoms; each of R¹³, R¹⁴, R¹⁵, R¹⁶, R¹⁷ and R¹⁸ 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 Y²¹ and Y²² 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 R³¹ and R³⁴ independently represents a linear or branched alkylene group having from 2 to 6 carbon atoms; each of X²¹ and X²² independently represents a covalent bond, an oxygen atom or an alkylene glycol group; each of R³² and R³³ independently represents a linear or branched alkylene group having from 1 to 6 carbon atoms; each of R²³, R²⁴, R²⁵, R²⁶, R²⁷ and R²⁸ independently represents an alkyl group having from 1 to 3 carbon atoms or a phenyl group; each of E²¹ and E²² independently represents -NHCO-   (provided that in this case, each of X²¹ and X²² is a covalent bond, E²¹ forms a urethane bond together with X²⁵, and E²² forms a urethane bond together with X²⁶) 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 X²¹ and X²² independently represents an oxygen atom or an alkylene glycol group, E²¹ forms a urethane bond together With X²¹ and X²⁵, and E²² forms a urethane bond together with X²² and X²⁶); each of X²⁵ and X²⁶ independently represents an oxygen atom, an alkylene glycol or a group represented by the formula V:
      wherein R⁴¹ is a trivalent hydrocarbon group having from 1 to 6 carbon atoms; Y²³ represents a group selected from the group consisting of an acryloyloxy group, a methacryloyloxy group, a vinyl group and a allyl group; R³⁶ represents a linear or branched alkylene group having from 2 to 6 carbon atoms; X²³ represents a covalent bond, an oxygen atom or an alkylene glycol group; E²³ represents -NHCO- (provided that in this case, X²³ 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, X²³ is an oxygen atom or an   alkylene glycol group), which forms a urethane bond together with X²³ and the adjacent oxygen atom bonded to R⁴¹; a is an integer of from 1 to 1500; and b is an integer of from 0 to 1499, provided a+b ≦ 1500;    as essential copolymer components.