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US 4,379,710 AGranted
Novel compositions and processes
AssigneeSterling Drug Inc.
InventorNathan N. Crounse
Life of this patent
Estimating the term…
Abstract
Storage-stable aqueous compositions containing dissolved water-soluble novel acid addition salts of poly(N-substituted sulfonamido) phthalocyanines which are prepared by the interaction of a single acid or a mixture of acids and poly(N-substituted sulfonamido) phthalocyanines, are useful for direct dyeing, particularly the dyeing of cellulose.
Claims7
A storage-stable dye composition comprising a concentrated, free-flowing aqueous solution containing by weight of the entire composition:
- (a) as the dye constituent approximately 9 to approximately 40 percent of acid addition salts of a phthalocyanine of the formula ##STR12## with a single acid or mixed acids wherein:
- Pc is phthalocyanine, m is a number from one to five, and n is a number from zero to one;
- (b) from zero to approximately 10 percent of a C.sub.1 to C.sub.2 alkanesulfonic acid selected from the group consisting of methanesulfonic acid and ethanesulfonic acid;
- (c) approximately 5 to approximately 30 percent of an acid selected from the group consisting of acetic acid, propionic acid, glycolic acid, 3-hydroxypropionic acid, lactic acid, hydrochloric acid and hydrobromic acid;
- (d) approximately 5 to approximately 25 percent of urea or a glycol selected from the group consisting of ethylene glycol, propylene glycol, diethylene glycol and diethylene glycol monoethyl ether;
- and
- (e) the remainder being water.
4 more elements
Dependencies are inferred from the claim text.