Photochromic system and layers produced therewith

Details Photochromic system and layers produced therewith Photochromic system and layers produced therewith

1987-03-20

1989-08-15

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Dye image from radiation sensitive dye or dye former by dry...

430343, 430920, G03C 1733

Patent

active

048574384

ABSTRACT:
A photochromic system contains an oxidizable leuco dye and a photochemically activated initiator which converts the leuco dye to the dye, the initiator being a phenanthroimidazole derivative.
The photochromic system is useful for the production of photochromic layers for photoresists and printing plates.

REFERENCES:
patent: Re28240 (1974-11-01), Jenkins
patent: 3445234 (1969-05-01), Cescon et al.
patent: 4456679 (1984-06-01), Leyrer et al.
patent: 4465760 (1984-08-01), Leyrer et al.
patent: 4465761 (1984-08-01), Takegawa et al.
patent: 4565771 (1986-01-01), Lynch et al.
patent: 4579806 (1986-04-01), Schupp et al.

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