Quinoxalines and their use in photographic processes

Details Quinoxalines and their use in photographic processes Quinoxalines and their use in photographic processes

1977-05-20

1979-03-20

Kelley, Mary F.

Gas separation: apparatus

Electric field separation apparatus

With means for vapor or liquid contact

96 60R, G03C 700, G03C 532

Patent

active

041452178

ABSTRACT:
Quinoxalines of the formula ##STR1## are provided, in which R.sub.1 is hydrogen if R.sub.3 and R.sub.4 conjointly are --O(CH.sub.2).sub.p O--, or is --CH.sub.2 OR, --CH.sub.2 NRR', --CH.sub.2 OCOR, --CH.sub.2 Cl, --CH.sub.2 Br, --CH.sub.2 CN, --CH.sub.2 SR, --CH.sub.2 SCN, --CH.sub.2 O(CH.sub.2).sub.m OR, --CH.sub.2 (OCH.sub.2 CH.sub.2).sub.n OR, --CH.sub.2 SO.sub.2 R.sub.5, --CH.sub.2 PO(OR.sub.5).sub.2, --CH.sub.2 SO.sub.3 R.sub.6 or --CH.sub.2 PO(OR.sub.6).sub.2 and R.sub.2 is lower alkyl, --CH.sub.2 PO(OR.sub.5).sub.2, --CH.sub.2 PO(OR.sub.6).sub.2 or CH.sub.2 SO.sub.3 R.sub.6, R.sub.3 and R.sub.4 independently are lower alkyl, lower alkoxy, RO(CH.sub.2).sub.m O-- or RO(CH.sub.2 CH.sub.2 O).sub.n -- or R.sub.3 and R.sub.4 conjointly are --O(CH.sub.2).sub.p O--, R and R' independently are hydrogen or lower alkyl, R.sub.5 is lower alkyl, R.sub.6 is hydrogen, an alkali metal cation or --N.sup..sym. (R).sub.4, m is 3 or 4, n is 1 to 3 and p is 1 or 2.
The quinoxalines are useful as bleach catalysts, especially as dye bleach catalysts, in processing baths for the photographic silver dye bleach process.

REFERENCES:
patent: 2221793 (1940-11-01), Gaspar
patent: 3656953 (1972-04-01), Schlunke et al.
patent: 3767402 (1973-10-01), Schlunke et al.
patent: 3769576 (1974-03-01), Schlunke et al.
patent: 3963492 (1976-06-01), Marthaler et al.
patent: 4014698 (1977-03-01), Marthaler et al.

Affiliated with

Also associated with

Rating

Quinoxalines and their use in photographic processes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Quinoxalines and their use in photographic processes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quinoxalines and their use in photographic processes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-219151