	US 12,384,869 B2
	Process for preparing a polyoxyalkylene carbonate polyol
Elisabeth Vogelsang, Cologne (DE); Joerg Hofmann, Krefeld (DE); Klaus Lorenz, Dormagen (DE); Philipp Sander, Grevenbroich (DE); Stefan Werda, Jüchen (DE); and Mike Schuetze, Leverkusen (DE)
Assigned to Covestro Deutschland AG, Leverkusen (DE)
Appl. No. 17/912,606
Filed by Covestro Deutschland AG, Leverkusen (DE)
PCT Filed Mar. 26, 2021, PCT No. PCT/EP2021/057877 § 371(c)(1), (2) Date Sep. 19, 2022, PCT Pub. No. WO2021/198054, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 20167776 (EP), filed on Apr. 2, 2020.
Prior Publication US 2023/0174705 A1, Jun. 8, 2023
Int. Cl. C08G 18/44 (2006.01); C08G 18/10 (2006.01); C08G 18/48 (2006.01); C08G 64/18 (2006.01); C08G 65/26 (2006.01); C08G 65/332 (2006.01)

CPC C08G 18/44 (2013.01) [C08G 18/10 (2013.01); C08G 18/4845 (2013.01); C08G 64/183 (2013.01); C08G 65/2606 (2013.01); C08G 65/2663 (2013.01); C08G 65/2672 (2013.01); C08G 65/3328 (2013.01); C08G 2261/126 (2013.01)]

13 Claims

1. A process for preparing a polyoxyalkylenecarbonate polyol comprising reacting a polyoxyalkylene polyol with a cyclic carbonate in the presence of an amine catalyst.