US 12,071,518 B2
Process for preparing a resin
Ben Nasli Bakir, Saltsjö-boo (SE); and Katarina Hägg, Bromma (SE)
Assigned to Stora Enso OYJ, Helsinki (FI)
Appl. No. 17/280,409
Filed by Stora Enso OYJ, Helsinki (FI)
PCT Filed Oct. 7, 2019, PCT No. PCT/IB2019/058509
§ 371(c)(1), (2) Date Mar. 26, 2021,
PCT Pub. No. WO2020/075032, PCT Pub. Date Apr. 16, 2020.
Claims priority of application No. 1851222-8 (SE), filed on Oct. 8, 2018.
Prior Publication US 2022/0002500 A1, Jan. 6, 2022
Int. Cl. C08H 6/00 (2010.01); C08H 7/00 (2011.01); C08L 97/00 (2006.01)
CPC C08H 6/00 (2013.01) [C08L 97/005 (2013.01)] 16 Claims
 
1. A method for preparing a lignin dispersion comprising the steps of
a) providing an aqueous medium having a pH of 1 to 7;
b) adding lignin to the aqueous medium, wherein the lignin is added in a form of a slurry having a solid content of lignin in a range of from 30 wt-% to 95 wt-%, calculated based on a total weight of the slurry; and,
c) mixing the aqueous medium until a dispersion of lignin in the aqueous medium has been obtained,
wherein steps a), b), and c) are carried out without actively heating the aqueous medium,
and wherein the dispersion is not actively heated after step c).