Process for dyeing and printing synthetic fiber materials

摘要

Process for the dyeing and printing of synthetic fibrous materials, wherein the said fibrous materials are treated with an aqueous dispersion, an aqueous padding liquor or with a solution in an organic solvent of at least one dyestuff of the formula in which R1 represents hydrogen, chlorine, lower alkyl or -NH-CO-lower alkyl, R2 represents hydrogen, lower alkyl or lower alkoxy, R3 represents lower alkyl, lower alkylene-OH, lower alkylene-CN, -CH2-CBr=CH2, or lower alkylene-COO-lower alkyl, R4 represents hydrogen, bromine or lower alkyl, and R5 represents hydrogen, lower alkyl or phenyl, this process yielding violet to bluish-green, preferably reddish to greenish dark blue dyeings and prints of high tinctorial strength and excellent fastness properties on the said fibrous materials, such as fibers of linear polyesters, cellulose esters and polyamides.