Manufacture of alkylcarboxylic acids

Details Manufacture of alkylcarboxylic acids Manufacture of alkylcarboxylic acids

C - Chemistry, Metallurgy

07

C

260/528.5, 260/5

C07C 53/126 (2006.01) C07C 45/50 (2006.01) C07C 51/14 (2006.01) C07C 51/145 (2006.01) C07C 51/235 (2006.01) C07C 53/122 (2006.01) C07C 53/124 (2006.01) C09F 9/00 (2006.01)

Patent

CA 1081254

ABSTRACT OF THE DISCLOSURE: Alkylcarboxylic acids CnH2n+1COOH (I) where n is from 2 to 18 are manufactured by hydro- formylation of olefins CnH2n with carbon monoxide and hydrogen in the presence of rhodium catalysts at from 80 to 200°C and from 80 to 600 bars, followed by oxidation of the aldehydes, first ob- tained, with oxygen or oxygen-containing gases, using a method wherein the reaction mixture resulting from the hydroformylation is directly subjected to the oxidative treatment, the carboxylic acids are distilled from the mixture thus obtained and the low- volatility distillation residue, containing rhodium, is recycled, without additional treatment, to the hydroformylation stage.

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