Method of dyeing fibrous products

Details Method of dyeing fibrous products Method of dyeing fibrous products

1979-02-15

1981-01-13

Schofer, Joseph L.

Bleaching and dyeing; fluid treatment and chemical modification

Process of printing permanently on substrate, other than...

Vat dye or sulfur dye, e.g., quinonic or indigoid reducible...

8652, 252188, D06P 122, D06P 130, C09K 300

Patent

active

042446902

ABSTRACT:
According to this invention, there is provided an improved method of dyeing fibrous products characterized in that, in the dyeing of fibrous products using an oxidation-reduction dyeing type dye and an aqueous alkali solution of thiourea dioxide as a reducing solution, the reduction of the dye with the said aqueous alkali solution of thiourea dioxide is carried out in the presence of one or more substances selected from the group consisting of saturated aliphatic ketones having 3 to 10 carbon atoms, saturated aliphatic ketocarboxylic acids having 3 to 10 carbon atoms and alicyclic ketones having 3 to 10 carbon atoms.

REFERENCES:
patent: 2164930 (1939-07-01), Lubs
patent: 2201010 (1940-05-01), Papini
patent: 2576846 (1951-11-01), Mecco
patent: 2882280 (1959-04-01), Gruenebaum et al.
patent: 3248337 (1966-04-01), Zirker et al.
patent: 3632293 (1972-01-01), Krug
Peters, R. H., Textile Chemistry, vol. III, Elsevier Scientific Publ. Co., N. Y., 1975, pp. 493-494.

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