Process for improving washfastness of indigo-dyed fabrics

Details Process for improving washfastness of indigo-dyed fabrics Process for improving washfastness of indigo-dyed fabrics

1980-12-02

1982-02-02

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Acylating agent or cross-linker dye additive, composition,...

8549, 8566, 8584, 8590, 8576, 8606, 8653, 8918, C09B 6200

Patent

active

043137326

ABSTRACT:
Dyes are fixed in an indigo-dyed cellulosic fabric, such as denim, in order to improve its washfastness, by applying an aqueous solution of a fixative compound then drying and curing the thus treated fabric in the disclosed process. Suitable fixatives include colorless and colored dihalo-s-triazine reactive dyes. Cellulosic fabrics thus treated retain their original indigo color even after repeated launderings.

REFERENCES:
patent: 3454551 (1969-07-01), Mangini et al.
patent: 3685953 (1972-08-01), Cuvelier
patent: 3743477 (1973-07-01), Egli et al.
patent: 3988111 (1976-10-01), Balland
patent: 4035145 (1977-07-01), Gipp et al.
W. F. Beach, "Fibre-Reactive Dyes", (Logos Press, London), 1970, p. 92.
K. Venkataraman, "The Chemistry of Synthetic Dyes", vol. VI (Academic Press) 1972, pp. 195-198.

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