Water-soluble trisazo dyestuffs on the basis of a combination of

Details Water-soluble trisazo dyestuffs on the basis of a combination of Water-soluble trisazo dyestuffs on the basis of a combination of

1982-08-23

1985-01-08

Higel, Floyd D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

534797, 534876, C09B 3102, C09B 3322, D06P 330, D06P 332

Patent

active

044926537

ABSTRACT:
Water soluble trisazo dyestuffs of the formula ##STR1## in which A is 1-amino-8-naphthol-3,6-disulfonic acid or 1-amino-8-naphthol-4,6-disulfonic acid, or a mixture of these two compounds, and B is 1-(3'- or 4'-aminophenyl)-3-methyl-5-pyrazolone, a process for their manufacture by diazotizing component A and coupling it with 3,3'-dihydroxy-diphenylamine to give a monoazo dyestuff, reacting this dyestuff with diazotized component B to give a disazo dyestuff, and converting this dyestuff to the trisazo dyestuff by uniting it with diazotized 4-nitro-4'-amino-diphenylamine-2-sulfonic acid, or by operating as described while, however, changing the sequence of reaction of component B and 4-nitro-4'-amino-diphenylamine-2-sulfonic acid, and use of these dyestuffs for the dyeing of leather and fur.

REFERENCES:
patent: 1615551 (1927-01-01), Oesch
patent: 1863792 (1932-06-01), Hentrich et al.
patent: 2264681 (1941-12-01), Rossander et al.

Affiliated with

Also associated with

Rating

Water-soluble trisazo dyestuffs on the basis of a combination of 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 trisazo dyestuffs on the basis of a combination of, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water-soluble trisazo dyestuffs on the basis of a combination of will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-112890