Process for reducing the residual content of free alkylating agent in aqueous solutions of cationic surfactants

Abstract

A process for reducing the residual content of free alkylating agent in aqueous solutions of cationic surfactants comprising aftertreating the solutions with at least one of the following amine compounds: a) ammonia; b) tertiary amine corresponding to the general formula (I) ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 independently of one another represents linear or branched, optionally hydroxy-substituted alkyl radicals containing 1 to 18 carbon atoms or an alkenyl radical containing 8 to 18 carbon atoms; c) amino acids containing 2 to 8 carbon atoms; and d) oligopeptides having an average molecular weight of about 500 to about 5000, at an elevated temperature.

Dependencies are inferred from the claim text.