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. 28, 1979
Filed:
Feb. 09, 1978
Applicant:
Inventors:
Masakazu Ueoka, Ichikawa, JP;
Yasuyuki Iguchi, Ichihara, JP;
Takayuki Saito, Hitachi, JP;
Hiroshi Okamura, Chiba, JP;
Assignees:
Hitachi Chemical Company, Ltd., ALL OF, JP;
Maruzen Oil Co, Ltd., ALL OF, JP;
Goi Chemical Co, Ltd., ALL OF, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568789 ;
Abstract
Highly pure p-tertiary-butyl phenol can be prepared from an olefin composition comprising a major amount of at least one isobutylene oligomer and a minor amount of a codimer of n-butene and isobutylene. The reaction of said olefin composition with phenol is carried out in the presence of water and synthetic silica-alumina catalyst at a temperature of 140.degree.-230.degree. C.