Photographic element with lactone polymer

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

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430215, 430536, G03C 140, G03C 148, G03C 178

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active

044079389

ABSTRACT:
A photographic element comprising a support having thereof at least one silver halide emulsion layer and at least one temporary barrier layer, said temporary barrier layer comprising a mixture of a lactone polymer with repetitive units represented by the formula (I): ##STR1## and a vinylidene chloride terpolymer represented by the formula (II): ##STR2## wherein R is a hydrogen atom, an alkyl or an aralkyl group; R.sup.1, R.sup.2 and R.sup.3 each is a hydrogen atom or a methyl group; n.sup.1 is an integer of from 1 to 5, while n.sup.2 is an integer of 1 or 2; A is a monomer unit of a copolymerizable ethylenically unsaturated acid or of the salt thereof, while B is a copolymerizable ethylenically unsaturated monomer unit; x represents from 50 to 99.5% by weight, y represents from 0.5 to 44.5% by weight, and z represents from 0 to 49.5% by weight.

REFERENCES:
patent: 4229516 (1980-10-01), Abel
"Neutralizing Materials in Photographic Elements", Research Disclosure, No. 12331, 7/74, pp. 22-24.

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