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. 12, 2019
Filed:
Sep. 06, 2016
Applicant:
Ube Industries, Ltd., Ube-shi, Yamaguchi, JP;
Inventors:
Atsushi Yamada, Ube, JP;
Yasushi Yamamoto, Ube, JP;
Assignee:
UBE INDUSTRIES, LTD., Yamaguchi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 307/00 (2006.01); C07D 307/33 (2006.01); B01J 23/46 (2006.01); C07B 61/00 (2006.01);
U.S. Cl.
CPC ...
C07D 307/33 (2013.01); B01J 23/462 (2013.01); B01J 23/464 (2013.01); B01J 23/468 (2013.01); B01J 23/46 (2013.01); C07B 61/00 (2013.01);
Abstract
Provided is a method for producing γ-valerolactone that is hard to elute metallic components and has high productivity. γ-Valerolactone is synthesized by bringing a levulinic acid compound represented by the formula (1) (where R represents a hydrogen atom, a linear alkyl group of 1 to 6 carbon atoms or a branched alkyl group of 3 to 6 carbon atoms) into contact with hydrogen in the presence of a catalyst in which two or more different kinds of metals of Group VIII to Group X metals in the periodic table are supported on a support.