EP 4017900 A1 20220629 - METHOD FOR PREPARING POLYETHER CARBONATE ALCOHOLS
Title (en)
METHOD FOR PREPARING POLYETHER CARBONATE ALCOHOLS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON POLYETHERCARBONATALKOHOLEN
Title (fr)
PROCÉDÉ DE PRÉPARATION D'ALCOOLS DE POLYÉTHERCARBONATE
Publication
Application
Priority
- EP 19192407 A 20190819
- EP 20158920 A 20200224
- EP 2020072580 W 20200812
Abstract (en)
[origin: WO2021032554A1] The invention relates to a method for preparing polyether carbonate alcohols by attaching cyclic carbonate to an H-functional starter substance in the presence of a catalyst, characterized in that a tribasic alkali- or alkaline earth metal phosphate is used as the catalyst, the alkali metal being selected from potassium or cesium.
IPC 8 full level
C08G 64/30 (2006.01); C08G 18/42 (2006.01); C08G 65/26 (2006.01)
CPC (source: CN EP US)
C08G 18/44 (2013.01 - CN EP US); C08G 64/0208 (2013.01 - EP US); C08G 64/305 (2013.01 - CN EP US); C08G 65/26 (2013.01 - EP); C08G 65/2648 (2013.01 - US)
Citation (search report)
See references of WO 2021032554A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2021032554 A1 20210225; CN 114206982 A 20220318; EP 4017900 A1 20220629; US 2022315697 A1 20221006
DOCDB simple family (application)
EP 2020072580 W 20200812; CN 202080058182 A 20200812; EP 20751583 A 20200812; US 202017625539 A 20200812