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:
May. 14, 1981
Applicant:
Inventors:
Max Fremery, Wesseling, DE;
Joachim Korff, Bornheim-Sechtem, DE;
Assignee:
Braunkohlen Kraftstoff Aktiengesellschaft, Wesseling, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568804 ; 568794 ;
Abstract
This invention relates to a process for reacting phenol, mono- and di-alkyl phenols having at least one free o-position with methanol and/or dimethyl ether in the gas phase to form o-substituted phenols in the presence of a catalyst of oxides of iron, vanadium, at least one oxide of boron, aluminum, titanium, zirconium, silicon, germanium, tin and lead, and at least one oxide of an alkali metal, alkaline-earth metal, lanthanum and manganese.