Process for the preparation of concentrated solutions of anionic

Details Process for the preparation of concentrated solutions of anionic Process for the preparation of concentrated solutions of anionic

1986-05-27

1987-10-27

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Dye concentrate composition wherein an additional amount of...

8543, 8549, 8620, 8676, 8680, 8681, 8937, 210660, 210681, 210661, C09B 6724, C09B 6902

Patent

active

047027444

ABSTRACT:
Stable, concentrated aqueous solutions of, in particular, anionic reactive dyestuffs are obtained in a comparatively simple manner by freeing from salts, preferably by means of membrane separation processes, solutions of these substances just as they are obtained in the course of synthesis, and by replacing, with the aid of ion exchangers, the cations which cause sparing solubility.

REFERENCES:
patent: 4163012 (1979-07-01), Kramer et al.
patent: 4336026 (1982-06-01), Lacroix
patent: 4523924 (1985-06-01), Lacroix
patent: 4560480 (1985-12-01), Lacroix et al.

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