Photochromic photosensitive compositions

Details Photochromic photosensitive compositions Photochromic photosensitive compositions

1985-12-09

1987-09-15

Louie, Won H.

Radiation imagery chemistry: process, composition, or product th

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

Composition or product

430962, G03C 1733

Patent

active

046939628

ABSTRACT:
A photochromic photosensitive composition comprising a indolinobenzothipyran-based spiropyran compound, a transparent, high molecular weight film forming resin, and a compound represented by the general formula (I): ##STR1## wherein R.sub.1, R.sub.3, R.sub.4 and R.sub.6 each represents a hydrogen atom, a halogen atom or a hydroxyl group, R.sub.2 and R.sub.5 each represents a hydrogen atom or a hydroxyl group, and X represents --NH--, --S--, ##STR2## (where R.sub.7 and R.sub.8 each represents a hydrogen atom, --CH.sub.3, --C.sub.2 H.sub.5, --CH.sub.2 CH.sub.2 COOH or ##STR3##

REFERENCES:
patent: 3660094 (1972-05-01), Poot
patent: 4372582 (1983-02-01), Geisler
patent: 4485168 (1984-11-01), Arakawa et al.
patent: 4565779 (1986-01-01), Arakawa et al.

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