| abstract |
The use of waterproofed hydrotalcites with the general formula MgxAl (OH) y (CO3) m (A) n. z H2O, in which A represents the dianion of an aliphatic dicarboxylic acid with 4 to 44 carbon atoms or two anions of aliphatic monocarboxylic acids with 2 to 34 carbon atoms, and the conditions 1 <x <5, y 2x + 2, [y + 2 (m + n)] = 2x + 3, m + n 0.5, m 0, n 0, and 0 <z <10 apply, as catalysts for ethoxylation or propoxylation of compounds with active H atoms or fatty acid esters gives a narrow distribution of the homologues of the alkoxylation products. |