Stabilized phenylenediamine color developer compositions

Details Stabilized phenylenediamine color developer compositions Stabilized phenylenediamine color developer compositions

1999-06-14

2000-10-10

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Nonradiation sensitive image processing compositions or...

Developer

430465, G03C 7413

Patent

active

061300292

ABSTRACT:
Disclosed is a method for the stabilization of dry N,N-dialkyl-p-phenylenediamine color developers and to the stabilized compositions thus obtained wherein the color developer which is susceptible to oxidative discoloration is intimately mixed with a stabilizing amount of an alkali metal metabisulfite, bisulfite or sulfite The method is particularly useful for the stabilization of salts of N-ethyl-N-(2-hydroxyethyl)4-amino-3-methylaniline.

REFERENCES:
patent: 4414307 (1983-11-01), Kapecki et al.
patent: 4923786 (1990-05-01), Kuhnert et al.
patent: 5336588 (1994-08-01), Ueda
Kirk-Othmer, Encyclopedia of Chemical Technology, vol. 6, 965-1002, 4.sup.th Edition (1993).

Affiliated with

Also associated with

Rating

Stabilized phenylenediamine color developer compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stabilized phenylenediamine color developer compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stabilized phenylenediamine color developer compositions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2255122