Use of tertiary phosphines in photographic silver dye bleach mat

Details Use of tertiary phosphines in photographic silver dye bleach mat Use of tertiary phosphines in photographic silver dye bleach mat

1981-05-29

1982-11-02

Brust, Joseph Paul

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

544157, 544337, 26032661, 260465D, 260465E, 260465F, 260465G, 260465H, 2604651, 2604654, 2604655R, 2604656, 2604657, 2604658R, 260505R, 260507R, 260513R, 260513N, 568662, 430392, 430421, C07C12120, C07C121453, C07C12152

Patent

active

043572804

ABSTRACT:
A method of processing photographic silver dye bleach materials which have been exposed imagewise is provided. The process steps are (1) silver developing, (2) dye bleaching, (3) silver bleaching and (4) fixing. The treatment baths for the process steps (2), (3) and (4), or the combined treatment baths useful for process step (3) with at least one the process steps (2) or (4) contain water-soluble tertiary phosphines as silver ligands. These phosphines effect an acceleration of the dye and silver bleaching and they are further suitable stabilizers and optionally antioxidants which yield stable treatment baths.

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