	US 12,187,839 B2
	Polyether polyol
Lies Bonami, Aalter (BE); Joris Karel Peter Bosman, Herselt (BE); and Els Elisabeth Mercier, Overwinden (BE)
Assigned to HUNTSMAN INTERNATIONAL LLC
Appl. No. 17/434,781
Filed by HUNTSMAN INTERNATIONAL LLC, The Woodlands, TX (US)
PCT Filed Mar. 3, 2020, PCT No. PCT/EP2020/055552 § 371(c)(1), (2) Date Aug. 30, 2021, PCT Pub. No. WO2020/193087, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 19164934 (EP), filed on Mar. 25, 2019.
Prior Publication US 2022/0135730 A1, May 5, 2022
Int. Cl. C08G 18/48 (2006.01); C08G 18/76 (2006.01); C08G 65/30 (2006.01); C08G 65/335 (2006.01); C08K 5/51 (2006.01)

CPC C08G 18/485 (2013.01) [C08G 18/4825 (2013.01); C08G 18/7664 (2013.01)]

9 Claims

1. A process for providing a homogeneous polyether polyol composition comprising the following steps:

providing a crude polyether polyol mixture comprising a polyether polyol and a Group IA or Group IIA metal ion;

neutralizing said crude polyether polyol mixture by adding a strong acid to said mixture, resulting in a neutralised polyether polyol composition, which comprises said polyether polyol along with a salt of said Group IA or Group IIA metal ion and said strong acid; and

providing said homogeneous polyether polyol composition

wherein the strong acid is a pentavalent organic phosphorus compound and the salt is a phosphorus-containing compound based organic salt that is soluble in said homogeneous polyether polyol composition.