Add time:08/11/2019         Source:sciencedirect.com

A series of new 4-aminoazobenzene dyes was synthesised. Absorption maxima and some important technical properties (lightfastness and fastness to washing) on nylon-6.6 and on wool were measured. A number of similar previously described structures were also prepared and characterised. Colour and constitution relationships in this series of dyes were established.A statistical analysis of their fastness properties by a modified Free-Wilson method was carried out. The validity of the additive model was confirmed and quantification of substituent contributions was obtained.

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