Patent ID: 6666897
Filing Date: 2003-12-23
Classification: C09B,C09D,Y10S

Abstract:
A black, alcohol soluble dye composition comprising:a) from 20 to 45 percent, by weight, of a propanol solvent selected from n-propanol, isopropanol, or a mixture thereof; b) from 30 to 35 percent, by weight, of Nigrosine Base; c) from 20 to 40 percent, by weight, of one or more (C7-C20) straight or branched chain, saturated or unsaturated carboxylic acids; d) from 1 to 6 percent, by weight of a dye selected from the group consisting of C.I. Solvent Brown 12 dye; a yellow dye having the formula: wherein each R is independently a (C6-C12) alkyl; and mixtures thereof; and e) from 1 to 3 percent, by weight, of a Violet Base selected from the group consisting of Crystal Violet Base, Methyl Violet Base, or mixtures thereof.