Esters of acylated aminocarboxylic acid containing compounds

A surface-active ester of a polyhydroxy compound selected from the group consisting of glycerol, erythritol, sorbitol, erythrose, arabinose, xylose, glucose, fructose, galactose, mannose, maltose, polyvinyl alcohols, sucrose, tetralose, raffinose and, alkyl or hydroxyalkyl-glycosides, and an acylaminocarboxylic acid of the formula ##STR49## in which R represents H, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.22 -alkoxy, C.sub.3 -C.sub.22 -alkenoxy, aryl, aralkyl, aroxy, aralkoxy or the radical ##STR50## R.sub.1, R.sub.4 and R.sub.5 represent H, C.sub.1 -C.sub.22 -alkyl, C.sub.3 --C.sub.22 -alkenyl, cycloalkyl, aryl or aralkyl, or

• R.sup.6 represents C.sub.2 -C.sub.8 -alkylene or a radical of the formula ##STR51## R.sub.2 represents H, COOH, COO C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.6 -alkyl,
• R.sub.3 represents C.sub.1 -C.sub.10 -alkylene and
• x represents 0 or 1,
• wherein at least one of the radicals R.sub.1 to R.sub.5 contains at least 6 carbon atoms, and wherein the alkyl, alkenyl and cyclic radicals may be substituted by fluorine, chlorine, bromine, cyano, carboxyl, C.sub.1 -C.sub.4 -alkoxy and the cyclic radicals may also be substituted by C.sub.1 -C.sub.4 -alkyl, the total number of carbon atoms being 20 to 60 when R.sub.5 is ##STR52## and being 12 to 30 when R.sub.5 is H, C.sub.1 -C.sub.22 -alkenyl, cycloalkyl, aryl or aralkyl.