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:
Mar. 24, 2020
Filed:
Jan. 26, 2017
Applicant:
Stora Enso Oyj, Helsinki, FI;
Inventor:
Jari Kavakka, Stockholm, SE;
Assignee:
Stora Enso OYJ, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C11B 3/00 (2006.01); B01D 11/04 (2006.01); C11B 3/12 (2006.01); D21C 11/00 (2006.01); C07J 9/00 (2006.01); B01D 3/14 (2006.01); C07J 75/00 (2006.01);
U.S. Cl.
CPC ...
C11B 3/006 (2013.01); B01D 3/143 (2013.01); B01D 11/0492 (2013.01); C07J 9/00 (2013.01); C07J 75/00 (2013.01); C11B 3/12 (2013.01); D21C 11/00 (2013.01); B01D 2257/2062 (2013.01);
Abstract
The present invention relates to extraction of phytosterols from alkaline tall oil soap which is obtained from the Kraft process black liquor by skimming. In the method according to the present invention, phytosterols are extracted using dibromomethane, bromoform, tetrabromomethane or a combination thereof.