Wash-off film containing synthetic amphoteric polymers

Details Wash-off film containing synthetic amphoteric polymers Wash-off film containing synthetic amphoteric polymers

1986-06-27

1988-04-05

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430265, 430266, 430267, 430268, 430569, 430630, 430545, 430627, 430628, 430941, G03C 106

Patent

active

047358874

ABSTRACT:
Sharper edges are obtained in silver halide wash-off films for tanning development when from 5 to 60% of the unhardened gelatin binder in one or more layers is replaced with a synthetic amphoteric polymer consisting essentially of at least one of each of three constituents: (a) carboxylic acid, (b) alkyl primary amine, and (c) secondary and/or tertiary amine, the amphoteric polymer having an isoelectric point of from 4 to 8.

REFERENCES:
patent: 377373 (1877-08-01), Foss
patent: 3681079 (1972-08-01), Fitzgerald
patent: 3692753 (1972-09-01), Smith et al.
patent: 3749577 (1973-07-01), Hollister et al.
patent: 3813251 (1974-05-01), Hollister et al.
patent: 3907572 (1975-09-01), Ueda et al.
patent: 3957492 (1976-05-01), Miyazako et al.

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