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, 2019
Filed:
Jul. 20, 2017
Applicants:
National University Corporation Hokkaido University, Hokkaido, JP;
Clariant Catalysts (Japan) K.k., Tokyo, JP;
Inventors:
Assignees:
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, Hokkaido, JP;
CLARIANT CATALYSTS (JAPAN) K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 493/04 (2006.01); C07D 307/20 (2006.01); C07B 61/00 (2006.01); B01J 29/08 (2006.01); B01J 29/70 (2006.01);
U.S. Cl.
CPC ...
C07D 493/04 (2013.01); B01J 29/082 (2013.01); B01J 29/084 (2013.01); B01J 29/7007 (2013.01); C07B 61/00 (2013.01);
Abstract
Provided is a solid acid catalyst which enables the production of isomannide and/or 2,5-sorbitan from mannitol with high yield and high safety at low cost. The mannitol may be derived from a cellulose and/or a hemicellulose. The solid acid catalyst for dehydration contains an acid type β-zeolite and/or a Y type zeolite.