Patent ID: 6365541
Filing Date: 2002-04-02
Classification: B01J,C07C,C08G

Abstract:
An alkoxylation catalyst prepared bya) reaction of one mol of a dicarboxylic acid of the formula HOOCâ€”(CH2)aâ€”COOH, where a is from 1 to 4, with from 1.5 to 8 mol of an alcohol of the formulaRâ€”(OA)xâ€”OH where R is C4-C22-alkyl, C4-C22-alkenyl or a group of the formula Fâ€”(CF2)nâ€”(CH2)mâ€”, n is an integer from 6 to 16, m is an integer from 1 to 4, x is a number from 0 to 6 and A is â€”C2H4â€” or â€”C3H6â€”, to form the corresponding dicarboxylic monoester,b) formation of an alkaline earth metal salt of the dicarboxylic monoester by addition of water and from 0.45 to 0.55 mol of a basic alkaline earth metal compound per mol of dicarboxylic acid originally used, c) partial neutralization of the alkaline earth metal salt by addition of from 0.25 to 0.7 mol of H2SO4 per mol of basic alkaline earth metal compound originally used and d) removal of the water present at a temperature of less than 100Â° C.