Photographic element and polyester photographic film base theref

Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified backing or protective layer containing

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430531, 430533, 430534, G03C 176

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056395892

ABSTRACT:
A polyester photographic film support having a surface coated with a subbing layer which comprises a mixture of gelatin and a polymer where the gelatin to polymer ratio is less than 97:3 and such that the combination of dry coverage and weight fraction of gelatin in the mixture satisfies the equation: C+1.32.times.Z.gtoreq.0.825, where C is dry coverage in g/m.sup.2 and Z is the weight fraction of gelatin, and the polymer comprises:
a) from 1 to 60 weight percent of recurring units derived from a vinyl monomer having a primary amine addition salt component or aminostyrene addition salt component;
b) from 0 to 50 weight percent of recurring units derived from a hydrophilic vinyl monomer; and
c) from 20 to 98 weight percent of recurring units derived from a hydrophobic nonionic vinyl monomer.

REFERENCES:
patent: 3341505 (1967-09-01), Gander
patent: 3400103 (1968-09-01), Samour et al.
patent: 4252885 (1981-02-01), McGrail et al.
patent: 4304851 (1981-12-01), McGrail et al.
patent: 4689359 (1987-08-01), Ponticello et al.
patent: 4695532 (1987-09-01), Ponticello et al.
patent: 5326689 (1994-07-01), Murayama

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