EP 4017899 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 CARBONATE DE POLYÉTHER
Publication
Application
Priority
- EP 19192406 A 20190819
- EP 20158917 A 20200224
- EP 2020072576 W 20200812
Abstract (en)
[origin: WO2021032553A1] The invention relates to a process for preparing polyether carbonate alcohols by attaching cyclic propylene carbonate to an H-functional starter substance in the presence of a catalyst, characterized in that at least one compound according to formula MnX (I) is used as a catalyst, wherein M is selected from the alkali metal cations Li+, Na+, K+ and Cs+, X is selected from the anions VO3 -, WO4 2-, MoO4 2- and VO4 3-, n is 1, if X = VO3 -, n is 2, if X = WO4 2- or MoO4 2-, and n is 3, if X = VO4 3-.
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 64/30 (2013.01 - EP); C08G 64/305 (2013.01 - CN US); C08L 75/04 (2013.01 - EP)
Citation (search report)
See references of WO 2021032553A1
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 2021032553 A1 20210225; CN 114206981 A 20220318; EP 4017899 A1 20220629; US 2022267515 A1 20220825
DOCDB simple family (application)
EP 2020072576 W 20200812; CN 202080058168 A 20200812; EP 20751582 A 20200812; US 202017628257 A 20200812