ACIDIC DYEING FIBRES

摘要

The invention relates to acidic dyeing polyamide fibres which are greatly reproducible and nonsensitive to omissions during the production process. The content of the end aminogroups in the fibres is less than 10 meq/kg. Polyamide fibres of higher affinity to dyestuffs are produced by the copolymerization of a compound containing end carboxylic groups and manifesting basic nature. Suitable are melamine-produced compounds. 8 claims