Alkoxylated fatty acid alkyl ester preparation useful e.g. in dishwashing

摘要

The invention concerns a process for alkoxylating fatty acid alkyl esters, fatty acid esters being reacted in a manner known per se with alkylene oxides in the presence of double-layer mixed oxide catalysts and co-catalysts selected from the group comprising lithium hydroxide, alkaline earth salts and tin salts. The novel catalyst systems produce products which have a narrow homologue distribution and are additionally distinguished by a particularly low content of free alkylester and alkylmonoglycol ester.