OCULAR LENS MATERIAL

摘要

An ocular lens material made of a copolymer of monomers respectively represented by formula (I), (II) and (III), which has a well-balanced combination of mechanical strength, flexibility, oxygen permeability, shape stability, transparency, and hydrophilicity. ÄIn the formula, R<1> and R<2> each represents H or CH3; R<3> to R<8> each represents a C1-10 monovalent hydrocarbon group optionally substituted with fluorine atom(F); A<1> and A<2> each represents -O-, -S-, or -NR<9>- (wherein R<9> represents H or a C1-10 monovalent hydrocarbon group optionally substituted with F); X<1> and X<2> each represents a single bond or a divalent organic group; m is 0 to 300; R<10> represents H or CH3; A<3> represents -O-, -S-, or -NR<11>-(wherein R<11> represents H, or a C1-10 monovalent hydrocarbon group optionally substituted with F); Y represents a monocyclic monovalent hydrocarbon group; R<12> represents H or CH3; A<4> represents -O-, -S-, or -NR<13>- (wherein R<13> represents H or a C1-10 monovalent hydrocarbon group optionally substituted with F); X<3> represents a single bond or a divalent organic group; Z<1> to Z<5> each represents either a C1-10 monovalent hydrocarbon group optionally substituted with F or -OR<14> Äwherein R<14> represents either a C1-10 monovalent hydrocarbon group optionally substituted with F or a group represented by -O-SiR<15>R<16>R<17> äwherein R<15> to R<17> each represents either a C1-10 monovalent hydrocarbon group optionally substituted with F or -O-R<18> (wherein R<18> represents a C1-10 monovalent hydrocarbon group optionally substituted with F)üÜ; and n is 0 to 300.Ü