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:
May. 28, 2019
Filed:
Nov. 25, 2014
Applicant:
Upm-kymmene Corporation, Helsinki, FI;
Inventors:
Assignee:
UPM-KYMMENE CORPORATION, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08H 7/00 (2011.01); B27N 3/00 (2006.01); C09J 197/00 (2006.01); C08K 5/00 (2006.01); C08K 5/07 (2006.01); C07G 1/00 (2011.01);
U.S. Cl.
CPC ...
C08H 6/00 (2013.01); B27N 3/002 (2013.01); C07G 1/00 (2013.01); C08K 5/0025 (2013.01); C08K 5/07 (2013.01); C09J 197/005 (2013.01); B27N 3/00 (2013.01);
Abstract
The present invention relates to a method for treating lignin, wherein the method comprises the following steps: a) dissolving lignin into an aqueous composition, which contains a compound selected from the class of phenols and alkali, while keeping the temperature of the composition at 40-85° C., wherein the alkali comprises a hydroxide of an alkali metal; and b) heating the composition at a temperature, which is higher than the temperature of the composition in step a), with the proviso that the temperature of the composition does not exceed 100° C., while keeping the pH of the composition at a pH value of 6-14.