Azo dyestuffs containing an amino or acylated amino naphthol di-

Details Azo dyestuffs containing an amino or acylated amino naphthol di- Azo dyestuffs containing an amino or acylated amino naphthol di-

1977-09-27

1980-10-28

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260188, 260190, 260191, 260194, 260198, 260199, 260205, 260206, 260208, C09B 6282, D06P 1384, D06P 366

Patent

active

042306183

ABSTRACT:
Azo dyestuffs of the formula: ##STR1## wherein A is a phenylene or naphthalene nucleus containing at least one phosphoric or phosphonic acid group; R.sub.1 and R.sub.2 are hydrogen or --SO.sub.3 H; and R.sub.3 -R.sub.6 are hydrogen, --SO.sub.3 H, or NR.sub.7 Q wherein R.sub.7 is hydrogen or lower alkyl and Q is hydrogen or an acyl group of 2 to 8 carbon atoms, at least two of R.sub.1 -R.sub.6 being --SO.sub.3 H and at least one being --NHQ, provided that when the dyestuff is monoazo, then Q is an acyl group of 3 to 8 carbons and when the dyestuff is disazo, Q is hydrogen or an acyl group of 2 to 8 carbon atoms. The dyestuff may be used to reactively dye cellulosic materials, e.g., cotton or cotton/polyester blends. The dyestuffs are particularly useful in dyeing mixed fabrics of cellulose and synthetics together with disperse dyes from a single bath.

REFERENCES:
patent: 3947435 (1976-03-01), Pechmeze et al.

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