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:
Jun. 06, 2023
Filed:
May. 22, 2018
Applicant:
Stora Enso Oyj, Helsinki, FI;
Inventors:
Ashar Zafar, Alta, SE;
Jesper Ekström, Johanneshov, SE;
Assignee:
Stora Enso OYJ, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 97/00 (2006.01); B27N 1/02 (2006.01); C08G 8/38 (2006.01);
U.S. Cl.
CPC ...
C08L 97/005 (2013.01); B27N 1/0209 (2013.01); C08G 8/38 (2013.01);
Abstract
The present invention relates to a process for lignin dissolution in which partial methylolation of lignin is carried out during the step of preparing a solution of lignin in an aqueous medium comprising alkali. The lignin prepared according to the process of the present invention can be used to manufacture lignin-based phenolic resins, which are particularly useful in the manufacture of laminates.