Photographic reversal bath concentrate and method of preparing s

Details Photographic reversal bath concentrate and method of preparing s Photographic reversal bath concentrate and method of preparing s

1997-03-12

1998-04-07

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Using identified radiation sensitive composition in the...

430407, G03C 7407

Patent

active

057363021

ABSTRACT:
A photographic reversal bath concentrate is formulated in such a manner as to avoid precipitates while including new biocides and excluding propionic acid. The concentrate is prepared by adding stannous ion nucleating agent to a solution of an organic phosphonic or phosphinic acid chelating agent, followed by addition of a quaternary ammonium compound as the sole biocide at a concentration of at least about 1 g/l. The quaternary ammonium compound has a molecular weight of from about 175 to about 440.

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