Fibre-reactive Groups Reacting by Nucleophilic Substitution

Fibre-reactive Groups Reacting by Nucleophilic Substitution 

By far the most important fibre-reactive groups which react by nucleophilic substitution contain six-membered aromatic nitrogen-containing heterocyclic rings with halogen substituents. The first group of com- 

Perhaps the best known of these related groups of reactive dyes are those which utilise the 2,4,5-trichloropyrimidinyl (2,4,5-trichloro-l,3-dia-zinyl) system, 176, the basis of the Drimarene dyes marketed originally in 

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