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:
Sep. 10, 2019
Filed:
Aug. 19, 2015
Applicant:
Univeristy Court of the University of St Andrews, St Andrews, GB;
Inventors:
Assignee:
UNIVERSITY COURT OF THE UNIVERSITY OF ST ANDREWS, St Andrews, GB;
Primary Examiner:
Int. Cl.
CPC ...
C07B 41/06 (2006.01); C07G 1/00 (2011.01); D21C 11/00 (2006.01); C07B 41/02 (2006.01); C07C 39/10 (2006.01);
U.S. Cl.
CPC ...
C07B 41/06 (2013.01); C07B 41/02 (2013.01); C07C 39/10 (2013.01); C07G 1/00 (2013.01); D21C 11/0007 (2013.01);
Abstract
A method of depolymerizing a lignin includes oxidizing the lignin to provide an oxidized lignin wherein benzylic —OH of β-O-4 linkages have been converted to carbonyl. The oxidized lignin is depolymerized with a metal selected from the group consisting of zinc, magnesium, aluminum and titanium or mixtures thereof, in the presence of an ammonium salt or carbon dioxide. Also described are methods for manufacturing phenolic products from lignin and a method for the cleavage of a β-O-4 linkage in a substrate.