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Dyes Containing Aliphatic Amino End Groups: An Approach to Reactive Dyes for Polyester Fibre via Transamidation

The synthesis and characterization of a number of 3-[N-(3′-aminopropyl)carboxamido]-4-arylazopyrazolone dyes is described. Under Thermosol dyeing conditions, a certain mount of covalent bonding occurs between the dyes and polyester fibre via transamidation

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