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. 29, 1987
Filed:
Apr. 18, 1986
Applicant:
Inventor:
Isao Hirose, Matsuyama, JP;
Assignee:
Teijin Petrochemical Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562416 ; 562417 ; 562421 ; 562488 ;
Abstract
A process for producing 2,6-naphthalenedicarboxylic acid which comprises oxidizing 2,6-diisopropylnaphthalene or its oxidation derivative with molecular oxygen in a reaction medium containing at least 70% by weight of an aliphatic monocarboxylic acid selected from actic acid, propionic acid and a mixture of these in the presence of an oxidation catalyst comprising (A) at least one compound of a heavy metal element selected from cobalt and manganese and (B) bromine or a bromine compound; characterized in that said oxidation is carried out in the presence of 1.1 to 15 gram-atoms, per gram-atom of bromine, of an alkali metal.