No-mess ophthalmic lens tinting process

Details No-mess ophthalmic lens tinting process No-mess ophthalmic lens tinting process

1996-08-23

1998-04-28

Einsmann, Margaret

Bleaching and dyeing; fluid treatment and chemical modification

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

8524, 8552, 8561, 8562, 8563, D06P 500

Patent

active

057439206

ABSTRACT:
A safe, neat and more convenient process for tinting plastic optical lens substrates is provided by a novel packaging system. The tint dyes are provided in a water-soluble tint packet for the convenient preparation of solutions for tinting optical lens substrates. The tint packet has an indefinite shelf life, is stable even in summer temperatures and high humidity, protects the user from any contact with the dye material, and does not leave solid waste for disposal.

REFERENCES:
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patent: 4046507 (1977-09-01), Zweifel et al.
patent: 4076496 (1978-02-01), Hamano
patent: 4780103 (1988-10-01), Minowa
patent: 5028660 (1991-07-01), Kobashi et al.
patent: 5180651 (1993-01-01), Mason

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