The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 1983
Filed:
Aug. 14, 1981
Applicant:
Inventors:
Assignee:
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
203-6 ; 203 34 ; 203 61 ; 562519 ;
Abstract
In a process for recovering an aliphatic carboxylic acid and/or an ester thereof by distilling a liquid mixture containing the aliphatic carboxylic acid and/or the ester thereof and a catalyst of a metal of Group VIII of the periodic table of elements, the improvement wherein the distillation is carried out in the presence of carbon monoxide at a partial pressure of at least 0.01 kg/cm.sup.2 (absolute) in the distillation system to prevent the decomposition of said catalyst.