Dyestuff compositions containing modified sulfonated lignin dye

Details Dyestuff compositions containing modified sulfonated lignin dye Dyestuff compositions containing modified sulfonated lignin dye

1972-07-31

1977-05-24

Levy, Donald

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 34, 8 83, D06P 130

Patent

active

040253031

ABSTRACT:
Dyestuff composition for use in dyeing cotton fibers comprising a mixture of dye cakes of various colors, primarily direct or vat dyes, and sulfonated lignin dye dispersants having retarding properties. The dye dispersants of this invention are the reaction product of a sulfonated lignin and from 0.1 to 9.0% by weight of the total dispersant of a water-soluble magnesium salt, preferably 1.0 to 2.0% by weight. These dye dispersants are excellent dye retarders by eliminating uneven dyeing, and reduce foaming problems associated with dispersed vat dyes. These dye dispersants having retarding properties are used when a plurality of dye cakes are used in one dyeing operation to produce the much desired levelling effect on the process of vat dyeing.

REFERENCES:
patent: 1426522 (1974-01-01), Thiess
patent: 2680113 (1954-06-01), Adler
patent: 2734793 (1956-02-01), Marnon
Fox, Vat Dyestuffs & Vat Dyeing, pp. 240, 241, pub. 1947, by John Wiley & Sons, N.Y.C.
Knecht, Manual of Dyeing, 9th Edition, p. 867, vol. II, Pub. 1945, Mapleton House, Brooklyn, N. Y.
The Chemistry of Synthetic Dyes, vol. II, K. Venkataraman, Academic Press, Inc., N.Y., 1952, pp. 872-873.
Kirk-Othmer Encyclopedia of Chemical Technology, vol. 7, Interscience Publishers, N.Y., 1965, pp. 556-557.
Chem. Abst. vol. 2, pp. 3403-3404.

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