Crosslinked siloxane-urethane polymer contact lens

Details Crosslinked siloxane-urethane polymer contact lens Crosslinked siloxane-urethane polymer contact lens

1994-04-14

1995-06-20

Dean, Ralph H.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525479, 525903, 528 28, C08F28304

Patent

active

054261589

ABSTRACT:
A contact lens is described which is synthesized by reaction in a mold of a isocyanate capped poly(dialkylsiloxane) prepolymer with a poly(dialkylsiloxane) di- or polyalkanol. The clear polyurethane rubber contact lens is readily made completely wettable by a transfer-grafting process or post-treatment and has a high oxygen permeability.

REFERENCES:
patent: 4136250 (1979-01-01), Mueller et al.
patent: 4486577 (1984-12-01), Mueller et al.
patent: 4605712 (1986-08-01), Mueller et al.
patent: 4632968 (1986-12-01), Yokota et al.
patent: 4786657 (1988-11-01), Hammar et al.
patent: 4853453 (1989-08-01), Schafer et al.

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