Patent Number: 6,166,232

Title: Process for producing ester quats

Abstract: A process is described for producing ester quats of the formula (I) ##STR1## where X.sup.- is an anion of an inorganic or organic acid, R.sub.a is a C.sub.1 to C.sub.4 alkyl group, R.sub.b and R.sub.c are each, independently of one another, a C.sub.1 to C.sub.3 alkylene group, and R.sub.d is a C.sub.1 to C.sub.22 fragment of a saturated and/or unsaturated aliphatic carboxylic acid, m, n, p, and q are integers, m has a value from 1 to 3, n a value from 0 to 3, p a value from 0 to 1, m+n+p=4, and q has the value 1 or, if m=3, n=0, and p=1, the value 2, in which process a quaternary compound of the formula (II) ##STR2## where X.sup.-, R.sub.a, R.sub.b, R.sub.c, m, n, p, and q have the above meanings, is esterified, in the presence of an oxo acid of phosphorus and/or one of its alkali or alkaline-earth salts as a catalyst, with a saturated and/or unsaturated C.sub.1 to C.sub.22 carboxylic acid, alone or in a mixture, while withdrawing water.

Inventors: Bergfeld; Manfred (Erlenbach-Mechenhard, DE), Ahrens; Hartmut (Kleinwallstadt, DE), Carstens; Axel (Aschaffenburg, DE)

Assignee: Akzo Nobel NV

International Classification: C07C 213/00 (20060101); C07C 213/06 (20060101); C07F 009/02 ()

Expiration Date: 12/26/2017