PROCESS FOR PREPARING TANK DYES FROM BROMINATED DIBENZANTHRONE AND 1-AMINOANTHRAQUINONE, TANK DYES OBTAINED BY THIS PROCESS, AND THEIR USE

摘要

P Process for preparing vat dyes from brominated dibenzanthrone and 1-aminoanthraquinone, vat dyes obtained by this process, and their use. BR/ The dibenzanthrone is brominated in an inert solvent and the crude solution of the bromination product is reacted, in a single step, with 1-aminoanthraquinone, to obtain vat dyes which dye the cellulose in gray or black with good solidity properties. BR/ The invention finds its main application in the dyeing of cotton and cellulosic materials. /P