Bleaching and dyeing; fluid treatment and chemical modification – Nontextile – dyeing process or product – including inorganic... – Contact lens
Patent
1985-12-16
1987-05-26
Clingman, A. Lionel
Bleaching and dyeing; fluid treatment and chemical modification
Nontextile, dyeing process or product, including inorganic...
Contact lens
8509, 8552, 8557, 8602, 8637, 8661, D06P 500, D06P 352
Patent
active
046682406
ABSTRACT:
Colored contact lenses are produced by providing a contact lens constructed of polymer and coating at least a portion of the lens with coloring substance and binding polymer. The lens and binding polymers are bonded to each other by the reaction of functional groups selected from at least one of --COOH, --OH, and --NH--R, wherein R is hydrogen or alkyl, with functional groups selected from at least one of --NCO and epoxy.
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K. Venkataraman, "The Chemistry of Synthetic Dyes", vol. V, (Academic Press, 1971), p. 314.
Derwent Abstract 17961K08, EP 72353.
Clingman A. Lionel
Lee, Jr. Warrick E.
Schering Corporation
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