US 12,221,545 B2
Liquid lignin composition comprising lignin, water, alkali and urea
Ashar Zafar, Älta (SE); Jesper Ekström, Johanneshov (SE); and Dimitri Areskogh, Bromma (SE)
Assigned to Stora Enso OYJ, Helsinki (FI)
Appl. No. 16/631,236
Filed by Stora Enso OYJ, Helsinki (FI)
PCT Filed Jul. 2, 2018, PCT No. PCT/IB2018/054901
§ 371(c)(1), (2) Date Jan. 15, 2020,
PCT Pub. No. WO2019/016636, PCT Pub. Date Jan. 24, 2019.
Claims priority of application No. 1750944-9 (SE), filed on Jul. 18, 2017.
Prior Publication US 2020/0216672 A1, Jul. 9, 2020
Int. Cl. C08L 97/00 (2006.01); B27N 3/00 (2006.01)
CPC C08L 97/005 (2013.01) [B27N 3/002 (2013.01)] 14 Claims
 
1. A liquid lignin composition comprising:
20-45% wt-% water,
30-40 wt-% lignin,
0.5-11 wt-% of a group 1 alkali metal hydroxide, and
1-20 wt-% urea.