Quick acting hardener for photographic gelatin layers

Details Quick acting hardener for photographic gelatin layers Quick acting hardener for photographic gelatin layers

1990-07-11

1991-12-17

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430621, 530354, 530409, 106125, H03C 130

Patent

active

050734806

ABSTRACT:
Process for hardening proteinaceous materials by means of a quick acting hardener corresponding to the following formula ##STR1## wherein: Z.sub.1 and Z.sub.2 each independently represent substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, or Z.sub.1 represents substituted or unsubstituted alkylidene or Z.sub.1 and Z.sub.2 together represent the atomic grouping required to complete a 5- or 6-membered substituted or unsubstituted heterocyclic ring, including an aromatic heterocyclic ring and including such a ring with a ring fused-on, which atomic grouping may contain other hetero atoms in addition to the nitrogen atom;

REFERENCES:
patent: 3125449 (1964-03-01), Jeffreys
patent: 4376818 (1983-03-01), Ohashi et al.
patent: 4618573 (1986-10-01), Okamura et al.

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