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. 02, 1977
Filed:
Dec. 02, 1975
Applicant:
Inventors:
Assignee:
Japan Synthetic Rubber Co., Ltd., Tokyo, JA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
2606 / ; 2606 / ;
Abstract
In a process for producing methacrolein by the gas phase catalytic reaction of isobutene with molecular oxygen in the presence of a catalyst consisting of Mo, Bi, Fe, Co, Sb and O, the catalyst is prepared by using as the Sb component, a mixture of a trivalent Sb compound and a pentavalent Sb compound. When said catalyst is used, the reaction can be continued over a long period of time without formation of complete oxidation products, i.e. CO and CO.sub.2, and, even when the starting isobutene contains n-butene, the reaction proceeds smoothly to make it possible to produce methacrolein and 1,3-butadiene simultaneously.