Process for producing colored contact lens

Details Process for producing colored contact lens Process for producing colored contact lens

1982-12-15

1985-01-22

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

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

Contact lens

8509, 8650, B29D 1100, D06P 190, D06P 300

Patent

active

044949545

ABSTRACT:
A uniformly colored shaped article which is resistant to discoloration and fading can be produced by immersing a shaped article, particularly a contact lens, consisting of a polymer of at least one monomer selected from the group consisting of acrylates and methacrylates in a dyeing solution prepared by dissolving a water-soluble dye in a solvent capable of swelling said polymer, to swell and color the shaped article, and then drying the swollen shaped article.

REFERENCES:
patent: 3476499 (1969-11-01), Wichterle
patent: 3850892 (1974-11-01), Shen et al.
patent: 4157892 (1979-06-01), Tanaka
patent: 4245991 (1981-01-01), Haddad et al.
patent: 4310330 (1982-01-01), Funaki et al.
patent: 4377389 (1983-03-01), Haddad et al.
The Condensed Chemical Dictionary, Tenth Edition, p. 398.
Encyclopedia of Chemical Technology, Third Edition, vol. 8, p. 311.

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