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. 15, 2016
Filed:
Apr. 17, 2015
Applicant:
Mitsubishi Chemical Corporation, Tokyo, JP;
Inventors:
Assignee:
MITSUBISHI CHEMICAL CORPORATION, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D 307/08 (2006.01);
U.S. Cl.
CPC ...
C07D 307/08 (2013.01);
Abstract
The present invention relates to a method for producing tetrahydrofuran, comprising feeding 1,4-butanediol to a reactor and performing a cyclodehydration reaction in the presence of an acid catalyst to obtain tetrahydrofuran, in which a water concentration in a in-reactor liquid phase is within a range of 1.4 to 10 wt %.