Copolymer subbing material for photographic elements

Claim 1

A photographic element which comprises a resin film or resin coated paper having superimposed thereon a subbing layer of a composition consisting essentially of a copolymer of components (A), (B) and (C), wherein component (A) is present in an amount from about 0.1 to 15% by weight, component (B) is present in an amount of from 0.01 to 5% by weight, and component (C) is present in an amount of from about 20 to 80% by weight, component (A) being a monomer containing therein a moiety of the general formula (I) ##STR8## wherein R 1 and R 2 each is a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, component (B) being a monomer containing a carboxyl group or a branched alkoxy carbonyl group selected from the group consisting of acrylic acid, methacrylic acid, ethacrylic acid, chloroacrylic acid, maleic acid, fumaric acid, itaconic acid, mesaconic acid, citraconic acid, sorbic acid, acryloxypropionic acid, itaconic acid anhydride, maleic acid anhydride or a mixture of these acids, and component (C) being at least one monomer selected from the group consisting of isoprene, butadiene, butene, octene, styrene, methylstyrene, methyl vinyl ether, ethyl vinyl ether, chloroethyl vinyl ether, butyl vinyl ether, unsubstituted vinyl esters, acrylates, methacrylates, and acrylonitrile and a hydrophilic colloid layer coated on the layer of said composition comprising said copolymer containing therein the moiety of the general formula (I), said copolymer having a molecular weight of about 10,000 to 1,000,000 and being present in an amount effective to provide increased adhesion, of a degree useful in photographic element, between said resin film or resin coated paper and said hydrophilic colloid layer, and said resin film or resin coated paper having at least one layer containing a light-sensitive silver halide, physical development nuclei as used in a diffusion transfer process or a diazo compound.