PROCESS FOR THE PREPARATION OF PURE AMIDOPROPYL-N-ALKYL-POLYHYDROXYALKYLAMINE COMPOUNDS

摘要

The description relates to amidopropyl-N-alkyl-polyhydroxy alkyl amines of formula (1) in which Z is a linear polyhydroxy hydrocarbon radical with at least 2 possibly oxalkylated hydroxyl groups, R1 is a C1 to C4 alkyl radical or C2 to C4 hydroxyalkyl radical and COR is an aliphatic acyl radical with 6 to 22 carbon atoms, and to their salts obtained with an inorganic or organic acid. They are produced by: (a) reacting a compound of formula (2) with acrylonitrile to a compound of formula (3), (b) hydrogenating the product obtained in step (a) to a compound of the formula (4) and (c) monoacylating the product obtained in step (b) in the molten state to the compound of said formula (1). The compounds of the invention are easily soluble in water and water-alcohol mixtures and are advantageous co-tensides for use in washing and cleaning products and in cosmetic preparations for cleaning hair and skin.