Preparation of dyes which contain sulfonic acid groups and have

Details Preparation of dyes which contain sulfonic acid groups and have Preparation of dyes which contain sulfonic acid groups and have

1981-05-12

1985-12-24

Higel, Floyd D.

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

Organic compounds

Azo

106288Q, 106308Q, 106309, 26024578, 260372, 260505R, 534689, 534887, 544209, 544210, 544219, 546101, C09B 6902, C09B 6904, C09B 6742, C09B 6744

Patent

active

045607451

ABSTRACT:
A process for the preparation of dyes which contain sulfonic acid groups and have a low electrolyte content, wherein an aqueous solution or suspension, which may or may not contain inorganic salts, of the dye containing sulfonic acid groups is

REFERENCES:
patent: 3719703 (1973-03-01), Fritz et al.
patent: 3956271 (1976-05-01), Blass et al.
patent: 4110366 (1978-08-01), Tamabayashi et al.
patent: 4163012 (1979-07-01), Kramer et al.
patent: 4290812 (1981-09-01), Loock
Article by Otakar Cerny and Josef Hajek, 10-11-78, pp. 410-413.
Chemical Abstracts, vol. 86, No. 26, p. 27, Jun. 1977, (Taoka Chem.).
Analytica Chimica Acta, vol. 113, No. 2, 1980, pp. 307-314, (Puttemans et al).

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