Tinted contact lenses and a method for their preparation with re

Details Tinted contact lenses and a method for their preparation with re Tinted contact lenses and a method for their preparation with re

1982-06-01

1984-08-28

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Nontextile, dyeing process or product, including inorganic...

Contact lens

8543, 8549, 351162, D06P 500

Patent

active

044682298

ABSTRACT:
Contact lenses comprising polymeric lens materials in which reactive dyestuffs have been covalently bonded to monomer units of the polymer backbone, said reactive dyestuffs being reactive dyes capable of forming ether linkages with cellulose and reactive with hydroxyl, amino, amido or mercapto groups present in a hydrogel polymer to form the covalent bond therewith. The invention is of particular interest in the area of so-called hydrophilic or "soft" contact lenses, commonly referred to as hydrogel lenses.

REFERENCES:
patent: Re27401 (1972-06-01), Wichterle et al.
patent: 2976576 (1961-03-01), Wichterle et al.
patent: 3220960 (1965-11-01), Wichterle et al.
patent: 3476499 (1969-11-01), Wichterle
patent: 3499862 (1970-05-01), Wichterle
patent: 3679504 (1972-07-01), Wichterle
patent: 4157892 (1979-06-01), Tanaka et al.
patent: 4252421 (1981-02-01), Foley

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