Photographic processing composition containing polyvinyl aminimide

In a photographic diffusion transfer product comprising a light-sensitive photographic element containing at least one silver halide emulsion layer, a receiving layer for receiving images from said light-sensitive element, and an aqueous alkaline processing composition in a pressure rupturable container wherein said processing liquid is adapted to provide upon contact with an exposed photosensitive layer, as a function of development, an imagewise distribution of image-forming components and said product includes a silver halide developing agent;

• the improvement wherein said processing composition includes a polymer containing recurring groups of the formula:
• ##STR7## wherein R is hydrogen, alkyl or halogen;
• R.sub.1 is alkyl;
• R.sub.2 and R.sub.3 each are alkyl, aryl or alkaryl or R.sub.2 and R.sub.3 together comprise an alkylene group to form a heterocyclic ring with the nitrogen.

A photographic film unit which comprises a plurality of sequential layers including a first support;

• a photosensitive silver halide layer having associated therewith a dye image-forming material adapted to provide an imagewise distribution of diffusible image dye or image dye intermediate as a function of the point-to-point degree of silver halide layer exposure to actinic radiation;
• a layer adapted to receive said diffusible image dye or dye intermediate diffusing thereto;
• a second support transparent to radiation actinic to the silver halide layer;
• a rupturable container retaining an alkaline processing composition positioned extending transverse an edge of the film unit, and adapted, upon applicaton of pressure, to release said processing composition for distribution between layers of said film unit with said supports outermost, and a silver halide developing agent, said processing composition including a polymer containing recurring groups of the formula:
• ##STR8## wherein R is hydrogen, alkyl or halogen;
• R.sub.1 is alkyl;
• R.sub.2 and R.sub.3 each are alkyl, aryl or alkaryl or R.sub.2 and R.sub.3 together comprises an alkylene group to form a heterocyclic ring with the nitrogen.