Concentrated solutions of water-insoluble coupling components

Details Concentrated solutions of water-insoluble coupling components Concentrated solutions of water-insoluble coupling components

1980-02-19

1982-05-25

Tungol, Maria Parrish

Bleaching and dyeing; fluid treatment and chemical modification

Dye or potential dye composition, additive, treatment,...

Azo, acridone, or quinone dye

8666, C09B 2700, D06P 102

Patent

active

043314430

ABSTRACT:
Concentrated solutions of water-insoluble bis-acetoacetic acid-diphenylamides as coupling components; these solutions contain in addition to one or more of these coupling components water and sodium and/or potassium hydroxide and as aliphatic solvent one or more mono- or di- to hexa-ethyleneglycol monoalkyl ethers having lower alkyl radicals, and optionally ethyleneglycol, diethyleneglycol and/or propyleneglycol. The coupling components are contained in the solutions in a concentration of up to about 50% by weight without deteriorating the storage stability of the solutions. The solutions may be used for preparing water-insoluble azo dyestuffs on the fiber according to "ice-color" dyeing. On pouring into water containing a small amount of sodium hydroxide they give immediately ready-to-use impregnation baths.

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patent: 4115054 (1978-09-01), Hermes

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