Hardening method for gelatin

Details Hardening method for gelatin Hardening method for gelatin

1985-04-23

1987-06-16

Louie, Won H.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Antihalation or filter layer containing

430621, 430623, 530354, C08F 334, C08H 106, C09H 700, G03C 130

Patent

active

046736328

ABSTRACT:
A hardening method for gelatin which comprises using as a hardening agent a compound represented by formula (I) ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group; or two of said R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are combined with each other to form a ring (1); or 3 or more of said R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are combined with each other to form a condensed ring (2); X represents a group capable of being released when the compound shown by formula (I) reacts with a nucleophilic reagent; Y.sup..crclbar. represents an anion; or Y.sup..crclbar. is combined with one of X, R.sup.1, R.sup.2, R.sup.3, and R.sup.4, ring (1), or ring (2) to form an anionic portion of an intramolecular salt.

REFERENCES:
patent: 3826788 (1974-07-01), Froehlich et al.
patent: 3992366 (1976-11-01), Stauner et al.
patent: 4111926 (1978-09-01), Sera et al.
patent: 4233398 (1980-11-01), Nittel et al.

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