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:
Dec. 09, 1980
Filed:
May. 11, 1979
Shinichi Akiyama, Takaoka, JP;
Haruhisa Yamamoto, Takaoka, JP;
Nobuaki Yoneyama, Takaoka, JP;
Shinji Matsumoto, Takaoka, JP;
Nippon Zeon Co. Ltd., Tokyo, JP;
Abstract
A catalyst composition for use in preparing unsaturated carboxylic acids by the vapor-phase oxidation of unsaturated aldehydes, said catalyst composition comprising an oxide composition containing as essential ingredients (1) phosphorus, (2) molybdenum and (3) X in which X is at least one element selected from the group consisting of thallium and metals of Groups IA and II of the periodic table, characterized in that said oxide composition has a surface area of 4 to 20 m.sup.2 /g and a pore volume of 0.08 to 0.5 ml/g, whereby said catalyst composition has an excellent reproducibility of catalytic activity and a process for preparing aforesaid catalyst composition.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile