Gelatin hardening process

Details Gelatin hardening process Gelatin hardening process

1974-03-18

1976-09-21

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

96111, 2603436, C09H 700

Patent

active

039818578

ABSTRACT:
A process for hardening gelatin which comprises reacting photographic gelatin with a compound of the general formula ##SPC1##
Wherein R.sub.1 and R.sub.2 individually are halogen, an aryloxy group which may have substituents, or an arylthio group which may have substituents; X is a simple bond, an alkylene group which may have substituents --CO, --CO--R.sub.5 --CO-- (in which R.sub.5 is an alkylene group which may have substituents) or --R.sub.6 --(O--R.sub.6).sub.n -- (in which R.sub.6 is an alkylene group which may have substituents and n is a positive integer); an Y is a saturated or unsaturated hydrocarbon group which may have substituents, or a group ##SPC2##
(in which R.sub.3 and R.sub.4 individually are halogen).

REFERENCES:
patent: 2585596 (1952-02-01), Stanton
patent: 3110597 (1963-11-01), Gates et al.
patent: 3291624 (1966-12-01), Jeffreys et al.
patent: 3531292 (1970-09-01), Emmi

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