Photochromic compounds and their use in photoreactive lenses

Details Photochromic compounds and their use in photoreactive lenses Photochromic compounds and their use in photoreactive lenses

1983-09-07

1986-03-18

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Utilizing plasma, electric, electromagnetic, particulate, or...

264 11, 264 22, 264234, 350354, 351163, B29D 1100

Patent

active

045767661

ABSTRACT:
A method is disclosed for manufacturing transparent plastic articles, primarily plano or opthalmic photoreactive lenses, which comprises incorporating fulgides or fulgimides containing an adamantylidene group in plastics casting or moulding compositions or preformed plastics articles and converting the fulgide or fulgimide in situ into a form in which it confers on the article the property of darkening in the presence of sunlight and fading in its absence.

REFERENCES:
patent: 4012232 (1977-03-01), Uhlmann et al.
patent: 4075015 (1978-02-01), Vinkovic et al.
patent: 4186002 (1980-01-01), Heller et al.
patent: 4220708 (1980-09-01), Heller

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