Reduction of reticulation in gelatin-containing elements

Details Reduction of reticulation in gelatin-containing elements Reduction of reticulation in gelatin-containing elements

1982-11-29

1986-05-20

Kittle, John E.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified backing or protective layer containing

430539, 430621, 430622, 430629, 430627, 101125, 4284782, G03C 176, G03C 130, G03C 102, B41L 2726

Patent

active

045901511

ABSTRACT:
Reticulation caused by swelling with processing solutions in photographic elements is reduced for elements containing at least two contiguous gelatin-containing layers wherein the uppermost layer has a lateral swell coefficient at least 10% greater than the lower gelatin-containing layer before polymer addition and wherein said uppermost layer comprises an essentially non-diffusible vinyl polymer having reactive groups which crosslink by reaction with primary amine or secondary amine groups on gelatin or a water-soluble, non-diffusible amine containing vinyl polymer and a hardener for gelatin. These elements are particularly useful in photographic products.

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patent: 4508818 (1985-04-01), Ogawa et al.
"Reticulation in Gelatin Layers", by E. Tojo et al in Photographic Gelatin, R. J. Cox, Editor, Academic Press, 1972.
D. M. Burness and J. Pouradier, "III, The Hardening of Gelatin and Emulsions", pp. 577-587 in The Theory of the Photographic Process, Fourth ed., edited by T. H. James (MacMillan Publishing Co., Inc., New York, N.Y. 1977).

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