Lens composition, article and method of manufacture

Claim 1

A copolymer composition, especially suited for fabricating optical lenses, comprising a copolymer of copolymerized comonomers containing: (a) about one to about twenty-five percent by weight of an acryloxyalkylsilanol having the structure ##STR7## wherein R=CH 3 -- or H--; X, Y=C 1 -C 6 alkyl; phenyl or Z ##STR8## n=1-5; m=1-3 R1=C 1 -C 6 alkyl, or phenyl R2=C 1 -C 6 alkyl, or phenyl R3=C 1 -C 6 alkyl, or phenyl (b) about 0.5 to about fifteen percent by weight of a polyacryloxyalkylpolysiloxane having the structure ##STR9## Wherein: R=CH 3 -- or H--; m=0-3 n=1-5 ##STR10## R1=C 1 -C 6 alkyl, or phenyl; R2=C 1 -C 6 alkyl, or phenyl; and R3=C 1 -C 6 alkyl, or phenyl; (c) about 5 to about 60 percent by weight of a siloxy substituted ester of acrylic or methacrylic acid having the structure: ##STR11## Wherein R=CH 3 -- or H--; X=C 1 -C 6 alkyl, phenyl or Z Y=C 1 -C 6 alkyl, phenyl or Z ##STR12## and (d) about 35 to about 90 percent by weight of an acrylic or methacrylic ester of an alkanol having from one to 20 carbon atoms.