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

1982-09-24

1984-04-17

Louie, Jr., Won H.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430955, G03C 106

Patent

active

044435371

ABSTRACT:
Substituted hydroquinone compounds of the formula ##STR1## wherein R.sub.1 to R.sub.4 are hydrogen or alkyl and Z is an aromatic ring or a group of the formula --X--Y--X--, wherein X is an aromatic ring and Y is an electron withdrawing group, are incorporated as developers into photographic materials. These materials are suitable for activation processings.

REFERENCES:
patent: 4026708 (1977-05-01), Vanassche et al.
patent: 4201578 (1980-05-01), Abbott
patent: 4330617 (1982-05-01), Ohashi et al.
Research Disclosure, Dec. 1977, Item No. 16444.

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