Process for preparing aliphatic straight-chain and beta-alkyl-branched carboxylic acids
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United States of America Patent
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Nov 21, 2006
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app pub date -
Sep 28, 2005
filing date -
Nov 16, 2004
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Abstract
The present invention relates to a process for preparing aliphatic straight-chain and .beta.-alkyl-branched carboxylic acids by catalytic oxidation of aldehydes by means of oxygen or oxygen-containing gas mixtures. Alkali metal carboxylates or alkaline earth metal carboxylates or a mixture thereof in an amount, calculated as alkali metal or alkaline earth metal, of from 1 mmol each to from 10 mmol each per mole of aldehyde used and also metals or compounds of metals of groups 5 to 11 of the Periodic Table of the Elements in amounts of not more than 5 ppm, based on aldehyde used, are present as catalyst.
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