Solid dye preparation of water soluble dyes with aliphatic aminocarboxylic acid

Claim 1

A dyestuff granulate, readily soluble in cold water and containing (1) 30-90 percent by weight of an anionic dye containing at least one water-solubilizing group, (2) 1-25 percent by weight of a compound of the formula ##STR29## or an alkali salt thereof wherein R is a bivalent aliphatic radical having 1 to 7 C atoms, R 1 is hydrogen, --R--COOH, or an aliphatic radical (C 1 -C 12 ) which is unsubstituted or substituted by hydroxyl, alkylamino or alkoxy, R 2 is hydrogen, an aliphatic radical (C 1 -C 12 ) which is unsubstituted or substituted by hydroxyl; or the group --(CH 2 ) n --NH--CO--C p H 2p+1 wherein n is an integer from 1 to 3 and p is an integer from 1 to 5, or the group ##STR30## in which B is a direct bond, or a bivalent aliphatic radical selected from an ether or thioether radical, --CH 2 --, ##STR31## and --(CH 2 ) q -- wherein q is an integer from 3 to 6, and when R 1 and/or R 6 are hydrogen, q can also be 2, and when R 1 and R 3 are each hydrogen, R 2 can also be ##STR32## wherein n'is a number from 1 to 3, and m is an integer from 1 to 10, R 3 is hydrogen or methyl, R 6 is hydrogen, --R--COOH, or (C 1 -C 12 )-alkyl which is unsubstituted or substituted by hydroxyl, alkylamino or alkoxy, and (3) 0-50 percent by weight of further additives, which granulate is obtained forming an aqueous mixture of the constituents (1) to (3) and spray drying said mixture.