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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.:

US 9150729 B1

PDFFull Text
Date of Patent:
Oct. 06, 2015

Filed:

Feb. 24, 2014

Derivatives of native lignin from softwood feedstocks

Applicant:

Lignol Innovations Ltd., Burnaby, CA;

Inventors:

Mikhail Yurevich Balakshin, North Vancouver, CA;

Alex Berlin, Burnaby, CA;

Humbert Thomas Dellicolli, Hanahan, SC (US);

Chadrick Adam Nathaniel Jordan Grunert, Vancouver, CA;

Vera Maximenko Gutman, Burnaby, CA;

Darwin Ortiz, Delta, CA;

Edward Kendall Pye, Media, PA (US);

Assignee:

FIBRIA INNOVATIONS INC., Vancouver, CA;

Attorneys:

Perkins Coie LLP

Viola T. Kung

Primary Examiner:

John Uselding

Int. Cl.
CPC ...
C08H 7/00 (2011.01); C08L 23/02 (2006.01); C08L 97/00 (2006.01); A23K 1/12 (2006.01); A23L 1/30 (2006.01); A61K 36/15 (2006.01); A61K 36/48 (2006.01); A61K 36/54 (2006.01); A61K 36/76 (2006.01); C07G 1/00 (2011.01); C08J 3/00 (2006.01); C08K 5/13 (2006.01); C09K 15/06 (2006.01);
U.S. Cl.
CPC ...
C08L 97/005 (2013.01); A23K 1/12 (2013.01); A23L 1/3002 (2013.01); A61K 36/15 (2013.01); A61K 36/48 (2013.01); A61K 36/54 (2013.01); A61K 36/76 (2013.01); C07G 1/00 (2013.01); C08H 6/00 (2013.01); C08J 3/00 (2013.01); C08K 5/13 (2013.01); C08L 23/02 (2013.01); C09K 15/06 (2013.01); C08J 2397/00 (2013.01);
Abstract

The present invention relates to softwood lignin derivatives having an aliphatic hydroxyl content of from about 2.5 mmol/g to about 7 mmol/g lignin, and the preparation method thereof. The lignin derivatives have a desired antioxidant activity characterized by radical scavenging index (RSI). Another aspect of the invention relates to compositions comprising the softwood lignin derivative. Another aspect of the invention relates to a use of the softwood lignin derivatives comprising incorporating the softwood lignin derivatives into polymer compositions.

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