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:
May. 11, 1982
Filed:
Jun. 18, 1980
Applicant:
Inventors:
Hiroshi Hashizume, Kitakyusyu, JP;
Yoshiaki Izumisawa, Kitakyusyu, JP;
Assignee:
Mitsubishi Chemical Industries, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562414 ;
Abstract
A process is disclosed a process for the production of terephthalic acid by oxidizing para-xylene with molecular oxygen in which substantially all of the methyl acetate present in the vapor evolved from the reactor is recovered and circulated into the reactor.