Restraining layer for retarding the diffusion of hydroxyl...

Details Restraining layer for retarding the diffusion of hydroxyl... Restraining layer for retarding the diffusion of hydroxyl...

G - Physics

03

C

96/153, 402/165,

G03C 8/54 (2006.01)

Patent

CA 1116785

ABSTRACT OF THE DISCLOSURE A restraining layer capable of retarding the diffusion of hydroxyl groups is of particular use in a neutralization system for the dye diffusion transfer process. The restraining layer of the invention comprises a film-forming linear poly- mer consisting of alternating hydrophilic and hydrophobic segments joined to one another by carbonate, urethane and/or ester groups. The neutralization system provides retarded reduction of pH in the photographic material.

269780

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