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:
Nov. 21, 1978
Filed:
Jul. 20, 1977
Applicant:
Inventor:
Bruce E Leach, Ponca City, OK (US);
Assignee:
Continental Oil Company, Ponca City, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568804 ;
Abstract
Aluminas derived from aluminum alkoxide hydrolysis are calcined at 1150.degree.-1800.degree. F for a period of time ranging 0.5 to about 12 hours to develop specific pore volume and pore diameter characteristics prior to use as a catalyst in the vapor phase and liquid phase methylation of phenol, monosubstituted, and di-substituted phenols. The calcining at higher temperatures gives increased catalyst life, lower isomerization and disproportionation, and higher orthomethylation activity.