Development restrainer precursors for photographic elements

Details Development restrainer precursors for photographic elements Development restrainer precursors for photographic elements

1979-10-18

1981-03-10

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430240, 430382, 430390, 430446, 430486, 430544, 430559, 430613, 430957, G03C 140, G03C 700, G03C 110, G03C 530

Patent

active

042555108

ABSTRACT:
Photographic elements, assemblages and processes for color diffusion transfer photography are described wherein certain azole compounds having at least two nitrogen atoms are employed as development restrainer precursors. Preferred azole compounds include benzotriazoles, triazoles, tetrazoles, indazoles and benzimidazoles. The azole compounds have an alkali-hydrolyzable, N,N-disubstituted carbamoyl group on one of the two nitrogen atoms.

REFERENCES:
patent: 3260597 (1966-07-01), Weyerts et al.
patent: 3265498 (1966-08-01), Rogers et al.
patent: 3364028 (1968-01-01), Konig
patent: 3575699 (1971-04-01), Bloom et al.
patent: 3649267 (1972-03-01), Carlson
patent: 3856520 (1974-12-01), Bloom et al.
patent: 3893859 (1975-07-01), Borness et al.
patent: 4076529 (1978-02-01), Fleckenstein et al.
"Blocked Development Restrainers", Research Disclosure No. 13118, 3/1975 pp. 31-36.

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