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US 3,986,827 AGranted
Storage-stable concentrated aqueous solution of disazo acid dye
AssigneeE. I. Du Pont de Nemours and Company
InventorSteven Arnold Dombchik
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Abstract
Storage-stable, concentrated, aqueous, disazo acid dye solution consisting essentially of 10-25 weight % of the lithium or tri(2-hydroxyethyl)ammonium salt of ##SPC1## Wherein one of X and Y is H and the other is CH.sub.3 and R.sup.1 is CH.sub.2 CH.sub.2 OH, CH.sub.2 CH(CH.sub.3)OH or CH.sub.2 CH(C.sub.2 H.sub.5)OH, 5-25 weight % of N-methyl-2-pyrrolidone and the balance, to 100%, water.
Claims5
Storage-stable, concentrated, aqueous, disazo acid dye solution consisting essentially of, on a weight basis,
- a. 10-25% of the lithium salt of the dye having the formula ##SPC3##
- wherein one of X and Y is H and the other is CH.sub.3 and R.sup.1 is CH.sub.2 CH.sub.2 OH, CH.sub.2 CH(CH.sub.3)OH or CH.sub.2 CH(C.sub.2 H.sub.5)OH;
- b. 5-25% of N-methyl-2-pyrrolidone;
- and
- c. the balance, to 100%, water.
2 more elements
Dependencies are inferred from the claim text.