Process for the production of low-viscosity storable amphoteric surfactants from imidazolines

US5569767A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Guenter Uphues · Monheim, DE
• Uwe Ploog · Haan, DE
• Renate Schick · Haan, DE
• Hans-Juergen Schwark · Monheim, DE
• Sandra Witt · Langenfeld, DE

Key dates

• Filing date: Jul 25, 1995
• Grant date: Oct 29, 1996
• Expiry date: Jul 25, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S516/912
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

In order to prepare fluid, storage-stable ampholytic surface-active agents, (a) 1-hydroxyethyl-2-alkyl-2-imidazolines having formula (1), in which R.sup.1 stands for an alkyl residue with 5 to 21 carbon atoms, are quaternated or carboxymethylated with halogenated carboxylic acid salts at a pH range from 7.5 to 9, and at the same time hydrolyzed with aqueous bases, then (b) the pH value of the reaction final products is set between 5 and 7. ##STR1##