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

1981-09-29

1983-11-22

Trousof, Natalie

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

260934, 260946, 260950, 430438, 430495, 546261, 546275, 546283, 546284, 546294, 546299, 546322, 548531, 548536, 549 59, 549 60, 549 64, 549 71, 549472, 549485, C07C 6980, C07C 6982

Patent

active

044170726

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: 1912734 (1933-06-01), Staud et al.
patent: 2099455 (1937-11-01), Strain
patent: 3076837 (1963-02-01), Mills
patent: 3962314 (1976-06-01), Economy et al.
Chemical Abstracts vol. 57:8479d,e 1962.

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