Process for the preparation of stable dyestuff solutions: pressu

Details Process for the preparation of stable dyestuff solutions: pressu Process for the preparation of stable dyestuff solutions: pressu

1991-03-06

1992-09-08

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Dye concentrate composition wherein an additional amount of...

8543, 8549, 8606, 8630, C09B 6726, C09B 6754

Patent

active

051454858

ABSTRACT:
By adding boric acid or salts of boric acid before or during the pressure permeation of anionic dyestuff solutions, the filtration flux is substantially increased, resulting in a low-cost process, due to the shorter plant time required.

REFERENCES:
patent: 4072463 (1978-02-01), Schlafer et al.
patent: 4689048 (1987-08-01), Fortsch et al.
patent: 4702744 (1987-10-01), Wolff et al.
patent: 4778603 (1988-10-01), Koll et al.
patent: 4838895 (1989-06-01), Galli et al.
patent: 4851011 (1989-07-01), Lacroix et al.

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