PROCESS FOR THE PREPARATION OF FOREIGN-SALT-FREE ALKOXYLATED ACYLOXYALKANESULFONATES

摘要

Process for the preparation of foreign-salt-free alkoxylated acyloxyalkanesulfonates The acyloxyalkanesulfonates prepared correspond to the formula 1 <IMG> (1) in which: R is a hydrocarbon radical having 5 to 31 carbon atoms, X is an alkali metal or ammonium, R1 and R2 are identical or different and are hydrogen, a C1- to C4-alkyl or a hydroxy-C1- to C4-alkyl, R3 and R4 are identical or different and are hydrogen or a C1- to C4-alkyl. The foreign-salt-free products are obtained in such a manner that a) a glycol compound of the formula 2 HO-CHR1-CHR2-OH (2) is reacted with a hydroxyalkanesulfonate of the formula 3 HO-CHR3-CHR4-SO3X (3) in the presence of an alkaline catalyst for the formation of an alkoxylated hydroxyalkanesulfonate of the formula 4 HO-CHR1-CHR2-O-CHR3-CHR4-SO3X (4) and b) the alkoxylated hydroxyalkanesulfonate obtained in step a) is reacted with a fatty acid of the formula 5 R-COOH (5) in the presence of an esterification catalyst for the formation of an alkoxylated acyloxyalkanesulfonate of the specified formula 1.