Bleaching and dyeing; fluid treatment and chemical modification – Multiple chemically diverse fibers or fibers with different... – Polyester fiber and cellulose fiber
Patent
1979-08-02
1981-09-01
Schofer, Joesph L.
Bleaching and dyeing; fluid treatment and chemical modification
Multiple chemically diverse fibers or fibers with different...
Polyester fiber and cellulose fiber
8529, 8110, 8618, D06P 502, D06P 3872
Patent
active
042869617
ABSTRACT:
The present invention relates to an after-dyeing treatment process for synthetic/cellulosic fibre mixed substrates which have been dyed with at least one disperse and at least one reactive dye in which after fixation, the dyed or printed substrate is reductively treated at a neutral to alkaline pH with an aqueous solution containing reducing agent, whereby non-bound disperse dyestuff is decomposed such that it does not re-build up on the substrate whilst the fixed reactive dyestuff remains substantially unaffected.
REFERENCES:
patent: 4062642 (1977-12-01), Deucker, et al.
patent: 4066390 (1978-01-01), Christie et al.
Schnider, E. F., Amer. Dyestuff Reporter, May 13, 1963, pp. 52-59.
Buser Rolf
Palacin Francis
Robert Georg
Somm Franz
Doyle Thomas C.
Sandoz Ltd.
Schofer Joesph L.
Sharkin Gerald D.
Tungol Maria Parrish
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