Preparation and application of a novel formaldehyde-free fixing agent

摘要

Using diallylamine, hydrochloric and dimethyl diallyl ammonium chloride as reactants, ammonium persulfate/sodium sulfite as initiation system, binary polymer was prepared in water phase. The binary polymer was applied to cotton of reactive dyeing as a fixing agent, propreities of fixing fabric were tested. The results showed that the optimum synthesis conditions were as follows: 50 g of diallylamine, 600 g of 40% dimethyl diallyl ammonium chloride,6 g of ammonium persulfate, dropping of initiation at 80°C for 3 h. The reactive dyeings after binary polymer treatment had fairly good color fastness with 4-5 grade to dry rubbing, 4 grade to wet rubbing, color fastness with good to soaking and formaldehyde-free.