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:
Aug. 17, 1982
Filed:
Apr. 28, 1980
Applicant:
Inventors:
Kenji Nagura, Matsuyama, JP;
Shinichi Takeda, Matsuyama, JP;
Koshi Namie, Matsuyama, JP;
Takao Fujii, Matsuyama, JP;
Michio Yamamoto, Matsuyama, JP;
Seiichi Yokoyama, Tokyo, JP;
Assignee:
Hercofina, Wilmington, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
560 77 ; 560101 ; 560102 ; 560103 ; 562487 ; 562490 ; 562492 ; 562494 ;
Abstract
Disclosed is a process for the recovery of aromatic carboxylic acid or ester thereof from the residue fraction of the oxidation or esterification reaction mixture resulting from the oxidation or oxidation and esterification of an aromatic compound having at least one methyl or formyl group directly bonded to a ring carbon atom. The process comprises treating the residue fraction with hydrogen and a hydrogenation catalyst.