Diffusion control layers in diffusion transfer photographic...

Details Diffusion control layers in diffusion transfer photographic... Diffusion control layers in diffusion transfer photographic...

C - Chemistry, Metallurgy

07

C

96/135, 402/2, 9

C07C 69/54 (2006.01) C07D 333/48 (2006.01) G03C 8/54 (2006.01)

Patent

CA 1208228

ABSTRACT Polymers comprising recurring units having cyclic .beta.-elimination moieties capable of undergoing .beta.-elimination in an alkaline environment and are disclosed for use in diffusion control layers in diffusion transfer photographic products. These polymers comprise recurring units having the formula Image in which R is hydrogen, halogen or lower alkyl, L is an organic divalent linking group, such as -CO-O-, or -CO-N=, and Z represents a cyclic .beta.-elimination moiety such as Image

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