Polaroid Corporation

William T Macleish

Joseph Shulman

Ehud Shchori

Elements for use in a photographic diffusion transfer process comprising a sheet-like support having a polymeric acid neutralizing layer bonded thereto, wherein said polymeric acid layer is formed from a composition including a crosslinking agent that effects temporary crosslinks within said polymeric layer to promote resistance to aqueous interference during film unit assembly, but which readily hydrolyze under processing conditions so as to accommodate swelling of the polymeric layer in the presence of alkali processing composition.

Polymeric neutralizing layer with temporary crosslinks from an

A protective plastomeric sheet material for lamination to an image containing layer of a diffusion transfer photographic product.

Novel protective plastomeric sheet for identification card

The present invention is directed to diffusion transfer photographic products especially useful as film units in film packs or the like. Essentially the photographic products presented comprise a photosensitive element which after processing can provide a useable negative which is preferably produced concurrently with the formation of a positive image pattern.

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North Andover, MA, United States of America

William T Macleish