Tinted contact lens and method for preparation with dichlorotria

Details Tinted contact lens and method for preparation with dichlorotria Tinted contact lens and method for preparation with dichlorotria

1984-03-15

1990-01-02

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

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

Contact lens

8509, 8549, D06P 500, C09B 6200

Patent

active

048910465

ABSTRACT:
Hydrophilic contact lenses comprised of a copolymer of an hydroxyl group-containing monomer and N-vinylpyrrolidone are tinted by impregnating the lens with an aqueous solution of a dichlorotriazine reactive dye and fixing the dye in the lens by contacting the lens with an aqueous alkaline solution.

REFERENCES:
patent: 3476499 (1969-11-01), Wichterle
patent: 3679504 (1972-07-01), Wichterle
patent: 3937680 (1976-02-01), de Carle
patent: 4093361 (1978-06-01), Erickson et al.
patent: 4123407 (1978-10-01), Gordon
patent: 4157892 (1979-06-01), Tanaka et al.
patent: 4252421 (1981-02-01), Foley
patent: 4468229 (1984-08-01), Su
Newcomer et al., in American Journal of Optometry and Physiological Optics, vol. 54, No. 3, (Mar. 1977), pp. 160-164.
Venkataraman, "The Chemistry of Synthetic Dyes", vol. VI, Academic Press, 1972, p. 2.

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