Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1985-11-15
1987-03-10
Smith, Edward J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
523107, C08F 3008
Patent
active
046491856
ABSTRACT:
The contact lens of the invention is shaped of a poly(trimethylvinylsilane) resin having an average molecular weight of at least 200,000 or a copolymer based thereon. The contact lens has a very high oxygen permeability comparable to conventional transparent silicone rubbers so as to ensure a long time of continued wearing of the lens on the cornea with no adverse physiological influences and the material still has much better mechanical workability for precision shaping into a lens form than the transparent silicone rubbers.
REFERENCES:
patent: 4096315 (1978-06-01), Kubacki
patent: 4393113 (1983-07-01), Sugie et al.
Ishihara Toshinobu
Nagura Shigehiro
Takamizawa Minoru
Yamamoto Akira
Kulkosky Peter F.
Shin-Etsu Chemical Co. , Ltd.
Smith Edward J.
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