Process for preparing aliphatic straight-chain and...

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

Reexamination Certificate

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Reexamination Certificate

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07138544

ABSTRACT:
The present invention relates to a process for preparing aliphatic straight-chain and β-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.

REFERENCES:
patent: 6800783 (2004-10-01), Springer et al.
patent: 732 720 (1943-02-01), None
patent: 16 18 589 (1971-02-01), None
patent: 43 33 323 (1995-04-01), None
patent: 10010771 (2001-05-01), None
patent: WO 01/66504 (2001-09-01), None
patent: 856962 (1960-12-01), None

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