Bleaching baths containing bleaching accelerators

Details Bleaching baths containing bleaching accelerators Bleaching baths containing bleaching accelerators

1988-12-09

1990-07-03

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Nonradiation sensitive image processing compositions or...

Fixer

430430, 430461, G03C 538, G03C 544

Patent

active

049390759

ABSTRACT:
In the case of color materials with the usual processing times, bleaching and bleaching/fixing baths containing an iron(III) ion complex salt as bleach and, in addition, a 5- to 7-membered heterocyclic compound containing at least one N-atom and at least one other hetero atom from the group consisting of O,S,N which is substituted by --S.sup..crclbar. and, at a quaternary ring nitrogen atom, carries a positive charge arranged in such a way that no tautomeric charge compensation to a neutral thione form is possible, provide for good bleaching, i.e. for black areas free from residual silver in the case of color negative materials and for low minimum densities in the case of color reversal materials, by virtue of their excellent bleaching rate and, at the same time, their high stability.

REFERENCES:
patent: 4756918 (1988-07-01), Ueda et al.

Affiliated with

Also associated with

Rating

Bleaching baths containing bleaching accelerators does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bleaching baths containing bleaching accelerators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bleaching baths containing bleaching accelerators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1890476