Process for continuously fixing vat dyes on a textile web

Details Process for continuously fixing vat dyes on a textile web Process for continuously fixing vat dyes on a textile web

1975-01-17

1976-09-21

Welsh, M. J.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

81491, 81493, D06P 122

Patent

active

039816800

ABSTRACT:
Savings in reductant are realized and effluent is reduced in the continuous process of steam fixing of vat dyes on textile web by expressing reductant-comprising liquor containing excess reductant from the web following the steam fixing step and applying expressed liquor, together with fresh reductant liquor, to web entering the fixing step.

REFERENCES:
patent: 2487197 (1949-11-01), Stott et al.
patent: 3000688 (1961-09-01), Schubert et al.
patent: 3051541 (1962-08-01), Clapp

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