Fiber-reactive, water-soluble disazo dyes containing an N-B-sulf

Details Fiber-reactive, water-soluble disazo dyes containing an N-B-sulf Fiber-reactive, water-soluble disazo dyes containing an N-B-sulf

1972-11-29

1976-04-20

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260155, 260160, 260174, 260176, 260178, 260184, 260187, 260188, 260190, 260191, C09B 3104, C09B 3106, C09B 3110, C09B 3114

Patent

active

039519449

ABSTRACT:
Dyestuffs of the formula (1) ##SPC1##
Wherein A is an optionally substituted radical of the benzene or naphthalene series which, however, does not contain a sulfonic acid group, B is the radical of a coupling component of the benzene, naphthalene, pyrazolone, aminopyrazole, hydroxyquinoline or aceto-acetyl-arylamide series, which, however, does not contain a sulfonic acid group, and R is hydrogen or the lower alkyl.
These dyestuffs are very well water-soluble in spite of having a high molecular weight and containing only one sulfonic acid group. They are especially suitable for dyeing or printing materials of natural and synthetic nitrogen-containing fibers, such as wool, silk, polyamide or polyurethane fibers, preferably if dyed from an acid to neutral dye bath. They show a very good colour buildup and migration power when being applied on the material mentioned which allows to obtain even dyeings of good fastnesses to light and to wet processing, for example, to washing and to perspiration.

REFERENCES:
patent: 2142838 (1939-01-01), Fischer et al.
patent: 2221029 (1940-11-01), McNally et al.
patent: 2317387 (1943-04-01), Kvalnes et al.

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