Production of carboxylic acids or carboxylic acid esters

Details Production of carboxylic acids or carboxylic acid esters Production of carboxylic acids or carboxylic acid esters

2006-03-09

2008-10-07

Eyler, Yvonne (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C560S076000, C562S400000, C562S423000, C562S498000

Reexamination Certificate

active

07432390

ABSTRACT:
In the production of carboxylic acid or carboxylic acid ester, a reaction product containing the carboxylic acid or carboxylic acid ester which has been produced by the reaction of an olefin, carbon monoxide, and water or an alcohol in the presence of HF is heat-treated in the presence of an acid catalyst and an acid adsorbent. By the heat treatment, the contamination of the carboxylic acid or carboxylic acid ester with HF and/or fluorine compounds such as acyl fluorides can be prevented, to enable the stable production of a high quality and high purity carboxylic acid or carboxylic acid ester without causing troubles such as corrosion of apparatus.

REFERENCES:
patent: 3005846 (1961-10-01), Friedman et al.
patent: 4452999 (1984-06-01), Besecke et al.
patent: 4661296 (1987-04-01), Grote et al.
patent: 5463095 (1995-10-01), Shiokawa et al.
patent: 6194602 (2001-02-01), Karas
patent: 0 347 621 (1989-12-01), None
European Search Report, for Application No. EP 06 11 0648, dated Jun. 26, 2006.

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