EP 4017901 A1 20220629 - PROCESS FOR PREPARING POLYETHER CARBONATE ALCOHOLS
Title (en)
PROCESS 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 19192409 A 20190819
- EP 20158918 A 20200224
- EP 2020072585 W 20200812
Abstract (en)
[origin: WO2021032555A1] The invention relates to a process for preparing polyether carbonate alcohols by attaching cyclic ethylene carbonate to an H-functional starter substance in the presence of a catalyst, characterized in that at least one compound according to formulae X[VO3] (1), Y2[WO4] (2), or Y3[VO4] (3), wherein X = alkali metal, preferably potassium or cesium, and Y = potassium or cesium, is used.
IPC 8 full level
C08G 64/30 (2006.01); C08G 18/44 (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); C08G 64/305 (2013.01 - CN EP); C08G 65/26 (2013.01 - EP)
Citation (search report)
See references of WO 2021032555A1
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 2021032555 A1 20210225; CN 114206983 A 20220318; EP 4017901 A1 20220629; US 2022267504 A1 20220825
DOCDB simple family (application)
EP 2020072585 W 20200812; CN 202080058209 A 20200812; EP 20751584 A 20200812; US 202017619103 A 20200812