Hydroquinone derivatives and their use in photographic materials

Details Hydroquinone derivatives and their use in photographic materials Hydroquinone derivatives and their use in photographic materials

1982-09-17

1984-01-17

Downey, Mary F.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430959, G03C 106

Patent

active

044264445

ABSTRACT:
Compounds of the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are hydrogen or alkyl, X represents the atoms to complete an aromatic heterocyclic ring system and Y is hydrogen or the group ##STR2## where X is defined as above, are readily cleaved in alkaline solutions to release a hydroquinone derivative.
The compounds can be incorporated into photographic materials used for activation processing.

REFERENCES:
patent: 3186843 (1965-06-01), Haas
patent: 3246988 (1966-04-01), Porter et al.
patent: 3311476 (1967-03-01), Loria
patent: 4330617 (1982-05-01), Ohashi et al.

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