BLUE AZO DYESTUFF MIXTURE FOR STRONG BLUE COLOR ON HYDROPHOBIC FIBERS

摘要

The dyestuff mixture contains at least one dyestuff of the formula I (I) and at least one dyestuff of the formula II (II) wherein X and Y denote chlorine or bromine, R1 and R5 denote methyl or ethyl, R2 and R6 denote methyl, ethyl, n-propyl or i-propyl and R3, R4, R7 and R8 denote, for example, C1- to C11-alkyl, in the weight ratio of I:II=(5 to 95):(95 to 5), and is, for example, outstandingly suitable for dyeing synthetic fibres.