Process for reduction of textile dyestuffs

Details Process for reduction of textile dyestuffs Process for reduction of textile dyestuffs

1994-12-19

1995-08-22

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Inorganic additive for dye composition, dye composition...

Group viii metal

8528, 8598, 8604, 8650, 8662, C07B 3100

Patent

active

054435994

ABSTRACT:
A process comprising the reduction of textile dyestuffs in an aqueous alkaline medium by means of a reducing compound which is a complex of an organic complexing agent and an iron (II)-salt. The iron (II)-salt is present in an amount sufficient to ensure the desired reduction of the dyestuff after a single oxidation.

REFERENCES:
patent: 1774940 (1929-09-01), Mengel
patent: 2069919 (1937-02-01), Hardacre et al.
patent: 2843580 (1958-07-01), Straley
patent: 2906587 (1959-09-01), Lantz
patent: 2923592 (1960-02-01), Crosland
patent: 3086004 (1963-04-01), Gross et al.
patent: 3096319 (1963-07-01), Dreyer et al.
patent: 5244549 (1993-09-01), Bechtold
Hackh's Chemical Dictionary, 4th Edition, McGraw-Hill Book Company, 1972, p. 26.
Bechtold et al., "Textileveredlung", vol. 25, No. 6, pp. 221-226 (Jun. 1990).

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