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:
Mar. 18, 2014
Filed:
Sep. 09, 2009
Applicants:
Michio Tanimoto, Himeji, JP;
Nobuyuki Hakozaki, Himeji, JP;
Inventors:
Michio Tanimoto, Himeji, JP;
Nobuyuki Hakozaki, Himeji, JP;
Assignee:
Nippon Shokubai Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 8/04 (2006.01); B01J 8/06 (2006.01); C07C 51/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fixed-bed reactor containing a first catalyst layer filled with a first catalyst for producing acrolein from propylene; a second catalyst layer filled with a second catalyst for producing acrylic acid from acrolein; and an inert substance layer provided between the first catalyst layer and the second catalyst layer, and filled with an inert substance of a cylindrical shape having a surrounding wall in which an opening is formed. A process for producing acrylic acid containing the step of producing acrylic acid from propylene by using the aforementioned fixed-bed reactor.