Selected trihydroxybenzophenone compounds and their use in photo

Details Selected trihydroxybenzophenone compounds and their use in photo Selected trihydroxybenzophenone compounds and their use in photo

1989-10-30

1991-05-28

Van Le, Hoa

Radiation imagery chemistry: process, composition, or product th

Diazo reproduction, process, composition, or product

Composition or product which contains radiation sensitive...

430192, 430193, G03C 152

Patent

active

050194780

ABSTRACT:
A trihydroxybenzopohenone compound of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of hydroxyl group, halide group, a lower alkyl group having 1 to 4 carbon atoms, and a lower alkoxy group having 1 to 4 carbon atoms.

REFERENCES:
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patent: 3046121 (1962-07-01), Schmidt
patent: 3647443 (1972-03-01), Rauner et al.
patent: 4407926 (1983-10-01), Stahlhofen
patent: 4517275 (1985-05-01), Stahlhofen
patent: 4628020 (1986-12-01), Stahlhofen
patent: 4837121 (1989-06-01), Blakeney et al.
patent: 4894311 (1990-01-01), Uenishi et al.
Patent Appl. 07/200,676 Filed 5/31/88.

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