Process for making a soft contact lens of natural proteinaceous

Details Process for making a soft contact lens of natural proteinaceous Process for making a soft contact lens of natural proteinaceous

1984-07-17

1987-03-17

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Nonmechanical aftertreatment

264 11, 523106, B29D 1100

Patent

active

046506160

ABSTRACT:
A starting solution comprising one or more noncrystalline natural proteinaceous polymers of animal or vegetable origin is molded and gelled in a lens shaped mold and then removed from the mold. Thereafter the gel is crosslinked by immersion in a liquid containing a crosslinking agent.

REFERENCES:
patent: 3553299 (1971-01-01), Thiele et al.
patent: 3760045 (1973-09-01), Thiele et al.
patent: 4260228 (1981-04-01), Miyata
patent: 4264155 (1981-04-01), Miyata
patent: 4268131 (1981-05-01), Miyata et al.

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