Water-soluble trisazosulfonated dyestuff derived from 2-aminophe

Details Water-soluble trisazosulfonated dyestuff derived from 2-aminophe Water-soluble trisazosulfonated dyestuff derived from 2-aminophe

1976-08-20

1977-10-04

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260142, 260149, 260206, C09B 4528

Patent

active

040523756

ABSTRACT:
A water-soluble triazo dyestuff of the formula: ##STR1## The dyestuff, which is useful in dyeing cotton and other cellulosic fibers, is prepared by diazotizing 2-aminophenol-4-sulfonic acid, coupling the diazotized sulfonic acid with resorcinol, treating the reaction mixture with a copper complexing agent at 35.degree.-40.degree. C and a pH of 5-5.5, separately tetraazotizing 4,4'-diaminobenzanilide, coupling the tetraazotate with the previously formed reaction product to form a diazo-disazoic reaction product, and coupling the latter product with m-aminophenol to produce the desired dyestuff.

REFERENCES:
patent: 2039898 (1936-05-01), Gyr
patent: 2228415 (1941-01-01), Sparks et al.
patent: 2264681 (1941-12-01), Rossander et al.
patent: 2734051 (1956-02-01), Iselin

Affiliated with

Also associated with

Rating

Water-soluble trisazosulfonated dyestuff derived from 2-aminophe does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Water-soluble trisazosulfonated dyestuff derived from 2-aminophe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water-soluble trisazosulfonated dyestuff derived from 2-aminophe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1774132