Patent ID: 7138544
Filing Date: 2006-11-21
Classification: C07C

Abstract:
1. A process for preparing aliphatic straight-chain and β-alkyl-branched carboxylic acids of 5 to 13 carbon atoms comprising oxidizing the corresponding aldehydes with oxygen or oxygen-containing gas mixtures at 20 to 100° C., in the presence of alkali metal carboxylates or alkaline earth metal carboxylates or a mixture thereof in an amount, calculated as alkali or alkaline earth metal, of from 1 mmol to 10 mmol each per mole of aldehyde used and in the presence of 0.1 to 5.0 ppm of a metal of groups 5 to 11 of the Periodic Table of the Elements or the corresponding amount of a compound of such a metal or a mixture of such metals and/or metal compounds, based on the aldehyde used.