Colored polycarbonate articles with high impact resistance

Details Colored polycarbonate articles with high impact resistance Colored polycarbonate articles with high impact resistance

1987-12-01

1989-03-14

Willis, Prince E.

Bleaching and dyeing; fluid treatment and chemical modification

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

Polymer from polyol and a polycarboxylic acid or derivative...

8506, 8507, D06P 352

Patent

active

048121428

ABSTRACT:
Polycarbonate articles, especially eyeglass and optical lenses, are dyed in a dye solvent having a boiling point of at least 350.degree. F. in which a dye is dissolved. The article to be dyed is retained in the solution maintained at 200.degree. F. or more until sufficient dye has penetrated the polycarbonate, then removed, rinsed and dried. The dyeing operation does not unduly detract from impact resistance and the dyed product exhibits excellent ultraviolet light stability.

REFERENCES:
patent: 4076496 (1978-02-01), Hamand

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