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:
Dec. 31, 1985
Filed:
Jan. 22, 1985
Applicant:
Inventors:
Hiroshi Hashizume, Kitakyusya, JP;
Yoshiaki Izumisawa, Kitakyusya, JP;
Assignee:
Mitsubishi Chemical Industries Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562414 ;
Abstract
There is disclosed a process for producing terephthalic acid in which the mother liquor of the terephthalic acid slurry resulting from the oxidation of para-xylene, from which terephthalic acid has been separated is subjected to distillation to recover at least a portion of methyl acetate present therein, the recovered methyl acetate being circulated into the reactor.