Treatment of cellulose acetate butyrate contact lenses
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United States of America Patent
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Apr 10, 1984
Grant Date -
N/A
app pub date -
Nov 1, 1982
filing date -
Nov 1, 1982
priority date (Note) -
Expired
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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.
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