Process for the preparation of concentrated aqueous formulations

Details Process for the preparation of concentrated aqueous formulations Process for the preparation of concentrated aqueous formulations

1982-08-17

1984-08-14

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Organic additive for dye composition, dye composition...

Sulfur-containing

8524, 8527, 106 20, 106308Q, 106308N, 210653, 210654, 252308, C09B 6720

Patent

active

044654928

ABSTRACT:
In a process for the preparation of concentrated aqueous formulations of synthetic anionic dispersants, dilute reaction solutions of said dispersants are subjected to reverse osmosis using membranes which contain ionic groups and have a pore diameter of 1 to 500 .ANG.. The dispersant formulations have a high concentration of active ingredient. They are suitable for the preparation of pigment and dye compositions and impart excellent stability to them, e.g. at elevated temperature and against mechanical influences.

REFERENCES:
patent: 3723306 (1973-03-01), Bridgeford
patent: 3857782 (1974-12-01), Crowley
patent: 3872001 (1975-03-01), Davis et al.
patent: 4247401 (1981-01-01), Bloch et al.

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