C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 287/00 (2006.01) C08F 293/00 (2006.01) C08L 43/04 (2006.01) G02B 1/04 (2006.01) G02C 7/04 (2006.01)
Patent
CA 2093660
The present invention relates to novel copolymers and contact lenses made from these copolymers comprising preformed silicone-containing acrylic star polymers, graft copolymers and macro- monomers, preparation of these contact lenses and a therapeutic method for treating patients with visual impairment. Described is a composition comprising at least about 10 % by weight of a preformed silicone-containing acrylic copolymer and no more than about 90 % by weight of a matrix formed from the random polymerization of a mixture of monomers. The mixture of monomers comprises at least one hydrophilic monomer and optionally, monomers selected from the group consisting of silicone acrylates, esters of alpha, beta-unsaturated acids and crosslinking monomers. The preformed silicone-containing acrylic copolymer is preferably copolymerized throughout the matrix. The final compositions are hydrated to a final water content of at least about 10 % by weight.
Ali Mohammed I.
Anton Waifong
Coleman Henry D.
Seidner Leonard
Spinelli Harry J.
Cassan Maclean
Johnson & Johnson Vision Care Inc.
Permeable Technologies Inc.
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