Process for preparing water-insoluble blue azo dyes on the fiber

Details Process for preparing water-insoluble blue azo dyes on the fiber Process for preparing water-insoluble blue azo dyes on the fiber

1986-03-27

1987-09-29

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

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

Azo, acridone, or quinone dye

8666, 8687, 8696, 8918, C09B 3502, D06P 112, D06P 368

Patent

active

046966757

ABSTRACT:
Using the method of azoic dyeing, fast blue dyeings are obtained when the bis-diazotable diazo component used is a compound of the general formula (1) ##STR1## in which R is a straight-chain or branched alkyl group of 3 to 5 carbon atoms or a (C.sub.1 -C.sub.3)-alkoxy-(C.sub.2 -C.sub.4)-alkyl group having straight-chain and/or branched alkyl groups of in total 3 to 5 carbon atoms, and the coupling component used is a compound conforming to the general formula (2) ##STR2## in which Z stands for a hydrogen atom or a halogen atom or an alkoxy group of 1 to 4 carbon atoms and Aryl denotes a phenyl radical or a 1-naphthyl radical which can be substituted by 1, 2 or 3 substituents from the group consisting of halogen, nitro, alkyl of 1 to 4 carbon atoms and alkoxy of 1 to 4 carbon atoms, and the coupling reaction and dye formation on the fiber are carried out at a pH value between 4 and 10.

REFERENCES:
Colour Index, vol. 4, Society of Dyers and Colourists, 1972, pp. 4351, 4352, 4354, 4355.

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