MULTIFUNCTIONAL HAIR COLOR PROTECTOR

摘要

This invention relates to the synthesis of a multifunctional hair color protector, p-methoxy cinnamidoproyl dimethyl behenyl ammonium chloride of Formula I and the compositions containing the same for hair care.;

主权项

1. A process for making the quaternary ammonium compound, p-methoxy cinnamidopropyl behenyl dimethyl ammonium chloride of Formula I wherein; R is a linear alkyl group with minimum of 80% by wt. behenyl (C 22) said process comprising the steps of:
a) reacting p-methoxy cinnamoyl chloride (Formula III) with N,N-dimethyl aminopropylamine to give p-methoxy cinnamidopropyl dimethyl amine (Formula II) and b) quaternizing p-methoxy cinnamidopropyl dimethyl amine with behenyl chloride in aqueous medium to give the compound of Formula I.