Photographic element hardened with imidazolium hardeners

Details Photographic element hardened with imidazolium hardeners Photographic element hardened with imidazolium hardeners

1994-09-09

1995-10-17

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430642, 430621, G03C 130

Patent

active

054590299

ABSTRACT:
An improved imidazolium hardener is described. These novel hardners are specifically advantageous for hardening, or crosslinking, a hydrophilic colloid in a photographic element. The advance in the art is realized in A hardening agent chosen from the set consisting of: ##STR1## wherein: Y.sup.1 represents an alkyl of 6-24 carbons, aryl of 6-24 carbons, aralkyl of 7 to 25 carbons, the atoms chosen from C, N, O, and S necessary to form a 5- or 6-membered ring, or --L.sup.1 CR.sup.13 CH.sub.2 ;

REFERENCES:
patent: 3880665 (1975-04-01), Himmelmann
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patent: 5034249 (1991-07-01), Reif et al.
patent: 5378842 (1995-01-01), Fodor et al.
Lapshin, Kumpan, Komissarov, Cholinomimetic activity of highly stable N-acylonium salts, Chemical Abstracts, 116, 16, 1992.
Lapshin, Kumpan, Komissarov, Cholinomimetic activity of highly stable N-acyl carbamoylimidazole onium salts, Chemical Abstracts, 115, 64025, 1991.

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