1430221-07-0Relevant articles and documents
Trisazo acid dyes based on naphtholes
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, (2013/05/09)
The invention relates to novel acid dyes of formula (I) wherein R1 signifies H or a sulpho group R2 signifies H or a sulpho group, R1 has to be different from R2, R3 signifies H, a sulpho group, a substituted C1 to C4 alkyl group or an unsubstituted C1 to C4 alkyl group, a substituted C1 to C4 alkoxy group or an unsubstituted C1 to C4 alkoxy group, R4 signifies H, a substituted C1 to C4 alkyl group or an unsubstituted C1 to C4 alkyl group, a substituted C1 to C4 alkoxy group or an unsubstituted C1 to C4 alkoxy group, R6 signifies a substituted C1 to C9 alkyl group or an unsubstituted C1 to C9 alkyl group, an unsubstituted aryl group or a substituted aryl group. The novel acid dyes can be used for dyeing and printing polyamides.