G - Physics – 02 – B
Patent
G - Physics
02
B
402/307, 402/372
G02B 1/04 (2006.01) B29D 11/02 (2006.01) G02C 7/04 (2006.01)
Patent
CA 1132299
ABSTRACT This invention relates to bonnets for making contact lenses and contact lenses having high gas permeability shaped from a polymer selected from (a) polymers consist- ing essentially of the polymerization reaction products of one or a combination of different alkyl styrene monomers with one or more alkyl substituents on the aromatic ring and an unsubstituted vinyl group, and optionally at least one compatible cross-linking monomer, (b) polymers consis- ting essentially of the polymerization reaction products of at least one alkyl styrene monomer as defined in (a) with one or a combination of other styrene monomers selected from styrene, styrene with an alkyl substituent on the vinyl group only, and styrene with both an alkyl substituent on the vinyl group and one or more alkyl sub- stituents on the aromatic ring, and optionally at least one compatible cross-linking monomer and (c) polymers consisting essentially of the polymerization reaction products of one of the styrenes defined in (a) and (b) or combinations thereof with at least one compatible mono- olefinically unsaturated polymerizable monomer, and optionally at least one compatible cross-linking monomer.
328854
Loshaek Samuel
Shen Chah M.
Kirby Eades Gale Baker
Wesley-Jessen Inc.
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