Treatment of cellulose acetate butyrate contact lenses

Details Treatment of cellulose acetate butyrate contact lenses Treatment of cellulose acetate butyrate contact lenses

1982-11-01

1984-04-10

Hoffman, James R.

Coating processes

Optical element produced

Transparent base

B05D 118, G02B 104, G02B 110, G02B 300

Patent

active

044421419

ABSTRACT:
This disclosure describes the treatment of cellulose acetate butyrate contact lenses which are rendered hydrophilic by contacting said lenses with a treating agent which increases the hydrophilicity of said lenses. The treating agent is ammoniacal salt, alkali-metal hydroxide, strong mineral acid, benzene sulfonic acid, alkali metal borohydride or organometallic compound.

REFERENCES:
patent: 4168112 (1979-09-01), Ellis et al.

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