Preparation of cyclic carboxylic acid alkoxylate from carboxylic acid anhydride and alkylene oxide or alkylene diol

Verfahren zur Herstellung von cyclischen Carbonsäureesteralkoxylaten


Cyclic carboxylic acid ester alkoxylates of formula (I) are prepd. by reacting carboxylic acid anhydrides of formula (II) with a 2-4C alkylene oxide or alkylene diol at raised temp. in presence of calcined or hydrophobised hydrotalcite as catalyst. R1 = 1-40C alkyl or alkenyl or 6-42 C aryl or aralkyl; R2, R3 = H, Me or Et and if one of these is Et, then the other is H; n = 1-10.




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