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. 19, 2013
Filed:
Nov. 17, 2011
Atsushi Sudo, Takasaki, JP;
Kazuo Shiraishi, Takasaki, JP;
Hideki Sugi, Gunma, JP;
Hiroyoshi Nowatari, Takasaki, JP;
Fumio Sakai, Sanyoonoda, JP;
Tomoaki Kobayashi, Sanyoonoda, JP;
Tatsuhiko Kurakami, Sanyoonoda, JP;
Atsushi Sudo, Takasaki, JP;
Kazuo Shiraishi, Takasaki, JP;
Hideki Sugi, Gunma, JP;
Hiroyoshi Nowatari, Takasaki, JP;
Fumio Sakai, Sanyoonoda, JP;
Tomoaki Kobayashi, Sanyoonoda, JP;
Tatsuhiko Kurakami, Sanyoonoda, JP;
NipponKayaku KabushikiKaisha, Tokyo, JP;
Abstract
An object of the present invention is to provide a process for stably producing a catalyst for methacrylic acid production exhibiting high activity and high performance. The process for producing a catalyst for methacrylic acid production of the invention is characterized in that the water content of the catalyst ingredient powder for use in molding, temperature and humidity of a molding step, humidity and temperature of a baking step are individually controlled in the case where molding is performed by a coating method using an Mo—V—P—Cu-based hetero polyacid as an active ingredient and water or an alcohol and/or an aqueous solution of an alcohol as a binder.