Process for the preparation of pure...

Details Process for the preparation of pure... Process for the preparation of pure...

C - Chemistry, Metallurgy

07

C

C07C 233/38 (2006.01) B01F 17/00 (2006.01) C07C 231/14 (2006.01) C07C 233/36 (2006.01) C11D 1/52 (2006.01)

Patent

CA 2229485

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.

L'invention concerne des amidopropyl-N-alkylpolyhydroxyalkylamines de la formule (1), dans laquelle Z représente un radical hydrocarbure polyhydroxy linéaire, possédant au moins deux groupes hydroxyle éventuellement oxyalkylés, R?1¿ représente un radical alkyle C¿1? à C¿4? ou un radical hydroxyalkyle C¿2? à C¿4?, COR représente un radical acyle aliphatique possédant 6 à 22 atomes de carbone. L'invention concerne également les sels de ces composés obtenus avec un acide inorganique ou organique. Leur procédé de production consiste à: (a) faire réagir un composé de la formule (2) avec de l'acrylonitrile pour obtenir un composé de la formule (3); (b) hydrogéner le produit obtenu à l'étape (a) pour obtenir un composé de la formule (4); et (c) monoacyler le produit obtenu à l'étape (b) à l'état fondu pour obtenir le composé de ladite formule (1). Les composés selon l'invention sont facilement dissous dans l'eau et dans des mélanges eau/alcool, et ils constituent des co-tensio-actifs destinés à être utilisés dans les produits de lavage et de nettoyage et dans des préparations cosmétiques servant au nettoyage des cheveux et de la peau.

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