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, 1976
Filed:
Jan. 17, 1975
Applicant:
Inventor:
Michel Rakoutz, Oullins, FR;
Assignee:
Rhone-Poulenc Industries, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2603 / ; 2606 / ; 2606 / ;
Abstract
A process for preparing trimethylbenzoquinone is provided which does not involve the formation of a sulphonic acid intermediate which comprises oxidising 2,3,6-trimethyl-phenol directly with manganese dioxide in an aqueous solution containing sulphuric acid in an amount up to 40% by weight.