Process for the manufacture of imidazolines.

摘要

The invention provides a process for reducing the fiamide content of imidazolines having the formula:-
<Chemistry id="chema01" num="0001"><Image id="ia01" he="21" wi="38" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein R represents an aliphatic group having from at least 4 carbon atoms and R<Sub>1</Sub> represents an alkyl or alkenyl group having from 1 to 4 carbon atoms.

The mixture of imidazoline and diamide is reacted with a primary of secondary amine which deacylates the diamide to an amido-amine. The product of this deacyla- tion is an imidazoline solution which remains clear even on prolonged storage.

The imidazoline is produced by reaction of an acid RCOOH with a diamine NH<Sub>2</Sub>(CH<Sub>2</Sub>)<Sub>2</Sub>NHR<Sub>1</Sub>. Preferably this diamine is used as the deacylating agent.