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:
Sep. 22, 1998
Filed:
Aug. 23, 1996
Tatsuo Hamamatsu, Kawasaki, JP;
Mitsuo Matsuno, Yokohama, JP;
Nippon Oil Co., Ltd., Tokyo, JP;
Abstract
A method for producing a monoalkenyl benzene including reacting an alkyl benzene having 7 to 10 carbon atoms with a conjugated diene compound having 4 to 6 carbon atoms in the presence of a particular catalyst. The particular catalyst is obtained by depositing at least one of sodium, potassium, sodium amide, and potassium amide on a support made of a compound represented by the formula of K.sub.2 O.xAl.sub.2 O.sub.3 wherein x is 0.5.ltoreq.x.ltoreq.11, to obtain a precursor of a catalyst, and contacting the precursor of a catalyst with at least one of water, an alcohol, and a phenol. The precursor of the catalyst may be contacted with hydrogen before contacted with at least one of water, an alcohol, and a phenol.