Pad-dyeing of cellulose fibers with sulfur black dyes: mixture o

Details Pad-dyeing of cellulose fibers with sulfur black dyes: mixture o Pad-dyeing of cellulose fibers with sulfur black dyes: mixture o

1992-01-29

1993-08-10

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Organic additive for dye composition, dye composition...

Polymeric additive

8618, 8650, 8651, 8652, 8918, D06P 130, D06P 360

Patent

active

052344657

ABSTRACT:
Cellulose fibers are dyed ecologically soundly with sulfur black dyes by the pad-dyeing process by avoiding sulfides as reducing agent by replacing them by a dithionite-based mixture with at least one reducing sugar. A high color yield, a deep black shade and good reproducibility are ensured. The preferred reducing sugar is glucose.

REFERENCES:
patent: 4801303 (1989-01-01), Carlough et al.
patent: 4992078 (1991-02-01), Meszards
patent: 5030248 (1991-07-01), Meszards

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