Patent ID: 6130319
Filing Date: 2000-10-10
Classification: C09B,C09D

Abstract:
A method of making a dye compound, comprising reacting an aqueous solution of C.I. Reactive Yellow 2 with an aqueous solution of an amine, in a dye to amine molar ratio of no more than about 2:1, and alkylating the resulting product with a dialkyl sulfate, wherein the amine is selected from the group consisting of diethanol amine, 2-(2-aminoethylamino) ethanol, 4-aminomorpholine, 4-(2-aminoethyl) morpholine, 2-aminopyrimidine, aminopyrazine, 3-dimethylaminopropyl amine, 4-amino-1,2,4-triazole, ethanolamine, diethylaminoethylamine, and 1-(2-hydroxyethyl) piperazine.