Method for manufacturing hydrophilic contact lenses

Details Method for manufacturing hydrophilic contact lenses Method for manufacturing hydrophilic contact lenses

1989-08-21

1991-01-08

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

264 23, B29D 1100

Patent

active

049833324

ABSTRACT:
An improved method for manufacturing contact lenses wherein monomer or comonomer mixture is placed into a mold caivty and subjected to polymerization conditions to form a polymerized shape of desired shape wherein the improvement comprises the inclusion of a release agent in the monomeric mixture wherein said release agent comprises less than about three weight percent of said monomeric mixture and is chosen from a mixture of hydrophilic polymers with lipophilic compounds.

REFERENCES:
patent: 2542386 (1951-02-01), Beattie
patent: 4146696 (1979-03-01), Bond et al.
patent: 4534916 (1985-08-01), Wichterle

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