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

US5349106A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Ansgar Behler · Bottrop, DE
• Uwe Ploog · Haan, DE
• Hermann Hensen · Haan, DE
• Guenter Uphues · Monheim, DE

Key dates

• Filing date: Feb 18, 1993
• Grant date: Sep 20, 1994
• Expiry date: Feb 18, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C209/84
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

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: PA0 a) ammonia; PA0 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; PA0 c) amino acids containing 2 to 8 carbon atoms; and PA0 d) oligopeptides having an average molecular weight of about 500 to about 5000, at an elevated temperature.