Process for preparing hydrogel contact lenses containing quatern

Details Process for preparing hydrogel contact lenses containing quatern Process for preparing hydrogel contact lenses containing quatern

1978-10-11

1980-08-19

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

264 1, 526227, 526228, 526273, 526292, 526312, 526923, C08F22002, C08F22006, C08F22056, C08F 432

Patent

active

042185548

ABSTRACT:
A novel hydrogel soft contact lens and a process for preparation thereof is disclosed which employs quaternary ammonium salts as a co-monomer which provide control over the percent of hydration with as high as 85% hydration obtainable in the resulting lens.

REFERENCES:
patent: 3385839 (1968-05-01), Honig et al.
patent: 3861948 (1975-01-01), Samour et al.
patent: 3983083 (1976-09-01), Kaetsu et al.
patent: 4138446 (1979-02-01), Kawakami et al.

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