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. 23, 1983
Filed:
Sep. 20, 1982
Applicant:
Inventors:
Theodorus M Wortel, Moerkapelle, NL;
Jan H Schutten, Hellevoetsluis, NL;
Assignee:
Exxon Research & Engineering Co., Florham Park, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
585428 ; 585422 ; 585426 ; 585471 ;
Abstract
Highly selective oxidative coupling of aromatic methyl groups, such as coupling toluene to DPE, is effected under mild, liquid phase conditions with a peroxodisulfate without expensive metal ion catalysts, in presence of substantial amounts, preferably equimolar, of methyl, ethyl or benzyl substituted quaternary ammonium salts. A continuous process is possible by electrolytic regeneration of the spent oxidant.