Process for the HT dyeing of polyester materials with ethylene o

Details Process for the HT dyeing of polyester materials with ethylene o Process for the HT dyeing of polyester materials with ethylene o

1983-07-08

1985-05-21

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Organic additive for dye composition, dye composition...

Ether

8475, 8552, 8934, 8922, C09B 6700

Patent

active

045183929

ABSTRACT:
The invention describes a process for the HT dyeing of polyester fibre material with dyes which are sparingly soluble in water, which process comprises the use of a dyebath which contains at least one block polymer of ethylene oxide and propylene oxide having a molecular weight higher than 5000.
The use of such a polymeric non-ionic dispersant ensures, even in low concentration, the stability of the dye dispersion under HT conditions, with at the same time substantial to complete bath exhaustion.

REFERENCES:
patent: 3892522 (1975-07-01), Schade et al.
patent: 4225311 (1980-09-01), Niimi et al.
A. N. Derbyshire, J. Soc. Dyers and Colourists, 1972, 88, (II), pp. 389-392.

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