METHOD OF PREPARING CATIONIC SURFACTANT HAVING GOOD SOLUBILITY

摘要

PURPOSE: A manufacturing method of cationic surfactant with good solubility is provided to solve the solubility reduction due to adding two or more alkyl group, and to remarkably improve solubility to water. CONSTITUTION: A manufacturing method of cationic surfactant with good solubility in the chemical formula 1 comprises: a step of manufacturing polyoxyalkylenealkyl amine by adding ethylene oxide to bishydroxyalkylamine, which is obtained by reaction of alkylamine and alkyl glycidyl ether; a step of quaternization by adding dimethylsulfate into polyoxyalkylenealkyl amine and then stir-mixing for 4-6 hours at 50-60°C. In the chemical formula 1, R1 is C12-18 alkyl group, R2 is C1-4 alkyl, and m and n are integer.