Cold water-soluble acid dye composition derived from the standar

Details Cold water-soluble acid dye composition derived from the standar Cold water-soluble acid dye composition derived from the standar

1977-12-27

1979-05-08

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 79, 8 89R, 8 92, C09B 2700, D06P 102

Patent

active

041534140

ABSTRACT:
Cold water-soluble dye compositions consisting essentially of from 20-70% by weight of a sparingly soluble sulfonated, mono- or disazo acid dye, substantially in the form of its alkali metal salt, and from 80-30% by weight of an ammonium lignin sulfonate. The ammonium lignin sulfonate is used as a standardizing agent to adjust the strength of the concentrated acid dye to a level suitable for use in commercial dyeing and printing operations and to provide cold water solubility adequate for dyeing at ambient temperatures.

REFERENCES:
patent: 1812693 (1931-06-01), Hailwood
patent: 3100134 (1963-08-01), Maier et al.
patent: 3546197 (1970-12-01), Benko et al.

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