Several fiber reactive basic (polymethine) dyes containing the N-2,3-dibromopropionyl and N-chlorodifluoropyrimidyl groups have been prepared. They had better washfastness and lightfastness on wool than their nonreactive analogues. Attempts were made to prepare related fiber-reactive dyes containing the 2,4-dichloro- s-triazinyl group but the results were unsatisfactory.
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References
1.
Gale, D.J. and Wilshire, J.F.K. , Fiber-Reactive Basic Dyes I. Polymethine Dyes Containing the N-Chloroacetyl Group, J. Soc. Dyers Colour.90, 97-100 (1974).
