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:
Jul. 10, 1984
Filed:
May. 18, 1982
Applicant:
Inventors:
Takashi Suzuki, Niigata, JP;
Kouichi Kitahara, Niigata, JP;
Tomiyoshi Furuta, Niigata, JP;
Sadao Nozaki, Niigata, JP;
Assignee:
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ;
U.S. Cl.
CPC ...
502 24 ; 502 31 ; 423 50 ; 562414 ; 549248 ;
Abstract
A method of recovering a catalytic cobalt and/or manganese from a distillation residue in a process for preparing an aromatic carboxylic acid comprising a liquid-phase oxidation of the aromatic hydrocarbon having aliphatic substituent(s) or its oxidized derivatives in the presence of the catalytic cobalt and/or manganese and the distillation of the reaction product, which comprises successively or simultaneously treating the distillation residue with water and with an organic solvent having a relative dielectric constant D of