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

1981-12-04

1984-01-03

Wong, Jr., Harry

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

351160R, 351160H, C08F 2010

Patent

active

044243286

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: 4139692 (1979-02-01), Tanaka et al.
patent: 4152508 (1979-05-01), Ellis et al.
patent: 4182822 (1980-01-01), Chang
patent: 4216303 (1980-08-01), Novicky
patent: 4276402 (1981-06-01), Chromecek et al.

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