Preparation and properties of novel low-foaming dyeing auxiliaries. Part 2: Preparation and dyeing properties of anionic derivatives of polyoxyethylenated stearylamine

A novel series of anionic derivatives with low-foaming properties were prep ared by the reaction of polyoxyethylenated stearylamine and maleic anhydrid e. The structure of these surfactants was confirmed by infra-red, nuclear m agnetic resonance and elemental analysis. The surfactants were found to dis play low-foaming properties and exhibit good surface-active properties. The degree of aggregation of direct dyes in dye-surfactant systems was found t o influence the rate of cotton dyeing.