Synthetic detergents of the ampholytic betaine type, process for preparing the same and compositions

US3954845A · kind A · utility

Assignee

• Modokemi Aktiebolag

Inventors

• Eva Margareta Martinsson
• Karl M. E. Hellsten · Ödsmål, SE

Key dates

• Filing date: Nov 28, 1973
• Grant date: May 4, 1976
• Expiry date: Nov 28, 1993

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D1/94
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Synthetic detergents of the ampholytic betaine type are provided, having a 2-hydroxy propylene ether group attached to the nitrogen atom of the betaine; the 2-hydroxy propylene ether group optionally can include a plurality of oxyalkylene units. The process for preparing these betaines easily and inexpensively involves reaction of an alcohol or hydroxy compound with epichlorohydrin to form the corresponding chloroglyceryl ether, which can be aminated and quaternized either in two stages, by reaction of a dialkyl amine and a straight or branched halogenated carboxylic acid, or in one stage by reaction of an amino acid. Detergent compositions containing these betaines are also provided.