Multifunctional layer for a photographic element and a coating

Details Multifunctional layer for a photographic element and a coating Multifunctional layer for a photographic element and a coating

1989-07-14

1992-04-14

Brammer, Jack P.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified backing or protective layer containing

430529, 430551, 430556, G03C 182

Patent

active

051047799

ABSTRACT:
The invention relates to a multifunctional back layer for a photographic element and to a coating composition for manufacturing the multifunctional layer which comprises at least four components: (a) a surface-hydroxylated aluminum-modified silica, (b) an alkali-metal salt of an organic polyacid, (c) an aqueous dispersion of copolymers of acrylic-acid-alkyl-ester including free carboxylic groups of from 1-10 mole-% and of free hydroxyl groups of from 5-20 mole-%, wherein the sum of free carboxylic groups and free hydroxy groups does not exceed 25 mole-%, and (d) a trifunctional aziridine as a cross-linking means. The multifunctional back layer of the photographic element according to the invention exhibits a low reception for dirt during passage through roller-transport developing machines, a high abrasion-proofness, wear resistance, stability in alkaline developer solutions, good printability during printing with conventional printing inks, good markability, inscriptability and lettering, as well as a good adhesive tape adhesion.

REFERENCES:
patent: 3525621 (1970-08-01), Miller
patent: 3791831 (1974-02-01), von Bonin et al.
patent: 4225665 (1980-09-01), Schadt, III
patent: 4418141 (1983-11-01), Kawaguchi et al.
patent: 4585730 (1986-04-01), Cho
patent: 4701403 (1987-10-01), Miller
patent: 4703000 (1987-10-01), Hodgins

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