Timing layers for photographic products

Details Timing layers for photographic products Timing layers for photographic products

G - Physics

03

C

96/207, 96/26

G03C 7/00 (2006.01) G03C 8/52 (2006.01)

Patent

CA 1116455

Abstract of the Disclosure A temporary barrier between reactants in photo- graphic products and especially for color diffusion transfer film unit comprises a polymeric layer of at least partially coalesced latex, said layer having an activation energy of penetration by an aqueous alkaline solution of greater than 18 kcal/mole.

275941

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