Silicone-containing contact lens material and contact lenses mad

Details Silicone-containing contact lens material and contact lenses mad Silicone-containing contact lens material and contact lenses mad

1983-06-03

1986-08-05

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

C07F 708, C07F 718

Patent

active

046044795

ABSTRACT:
According to the invention contact lenses are formed of unsaturated, multifunctional, organosiloxanes alone or mixed with monofunctional organosilanes and in some cases a hardening agent such as methyl methacrylate, hydrophilic monomer wetting agents, and itaconate hydrophilic and hardening agents. The multifunctional organosiloxane adds higher impact strength and reduces brittleness, probably due to greater cross-linking density in the final product and retains the desirable properties of silicone-containing materials for use in contact lenses.

REFERENCES:
patent: 3808178 (1974-04-01), Gaylord
patent: 4120570 (1978-10-01), Gaylord
patent: 4153641 (1979-05-01), Deichert et al.
patent: 4276402 (1981-06-01), Chromecek et al.
patent: 4294974 (1981-10-01), LeBoeuf
patent: 4306042 (1981-12-01), Neefe
patent: 4314068 (1982-02-01), Novicky
patent: 4387240 (1983-06-01), Berg

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