Use of hydrophobized hydrotalcites as catalysts for ethoxylation or propoxylation

摘要

PCT No. PCT/EP91/00566 Sec. 371 Date Dec. 2, 1992 Sec. 102(e) Date Dec. 2, 1992 PCT Filed Mar. 25, 1991 PCT Pub. No. WO91/15441 PCT Pub. Date Oct. 17, 1991.A process for the catalyzed ethoxylation or propoxylation of compounds selected from the group consisting of organic compounds containing active H atoms, esters of fatty acids containing 2 to 22 carbon atoms with monoalkanols containing 1-22 carbon atoms with polyols containing 2 to 12 carbon atoms and 2 to 6 hydroxyl groups, wherein the improvement comprises the use as catalyst for the ethoxylation or propoxylation of hydrophobicized hydrotalcites corresponding to the general formula I: MgxAl(OH)y(CO3)m(A)n.zH2O (I), in which A is selected from the group consisting of (i) a dianion of an aliphatic dicarboxylic acid containing 4 to 44 carbon atoms and (ii) two anions of aliphatic monocarboxylic acids containing 2 to 34 carbon atoms; 1=0; and 0