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Stepan Chemical Company

George T Battaglini

Thomas G Baker

Joseph R Wechsler

Frank L Skradski

A process is provided for making amphoteric surfactant compositions from substituted imidazolines whereby such substituted imidazolines are reacted with chloroacetate salts and then hydrolyzed to open the imidazoline ring and produce a solution which is substantially completely free from cyclic groups. The product solutions are highly foamable and have low skin irritation and low eye irritation characteristics.

Substituted imidazoline reactions with chloroacetate salts

A process for making substituted imidazoline substantially completely free from diamide and preferably from byproduct ester. The process involves contacting an aminoethyl lower alkanol amine with a methyl carboxylate at elevated temperature and thereafter subjecting the reaction product to two successive heat treatments under specified conditions. A feature of the process is that it contains an optional step which can be employed to correct the formation of unwanted amounts of ester in the product. The product imidazoline is useful as a starting material for making amphoteric surfactants.

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Buffalo Grove, IL, United States of America

George T Battaglini