Preparation and application of peroxide bleaching activator

Aiming at the problems existing in conventional cotton fabric bleaching such as high temperature and strength loss,a peroxide bleaching activator was prepared,and the main effective component was nonanoyloxy benzenesulfonate sodium(NOBS).The optimal synthetic conditions were as follows: 4-phenolsulfonate sodium was dissolved in sodium hydroxide solution(mole ratio of 1∶1),and then tetrabutyl ammonium bromide 5% was added.The mole ratio of nonanoyl chloride to 4-phenolsulfonate sodium was 1.3∶1 reacting at 30 ℃ for 80 min.The resulting product,without being separated,could be used as the peroxide bleaching activator and applied directly to the scouring and bleaching of pure cotton knitgoods.This peroxide bleaching activator offers such benefits as lowering bleaching temperature(80 ℃),acceptable bleaching effect,and less strength loss and energy consumption.