EP 4118130 A1 20230118 - PROCESS FOR PREPARING POLYETHER CARBONATE POLYOLS
Title (en)
PROCESS FOR PREPARING POLYETHER CARBONATE POLYOLS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON POLYETHERCARBONATPOLYOLEN
Title (fr)
PROCÉDÉ DE PRÉPARATION DE POLYÉTHERCARBONATE-POLYOLS
Publication
Application
Priority
- EP 20161952 A 20200310
- EP 2021055507 W 20210304
Abstract (en)
[origin: WO2021180567A1] The present invention relates to a method for preparing polyether carbonate polyols by adding alkylene oxide and carbon dioxide to a H-functional starter substance in the presence of a DMC catalyst or a metal complex catalyst based on the metals cobalt and/or zinc, wherein (γ) alkylene oxide and carbon dioxide are added to a H-functional starter substance in a reactor in the presence of a DMC catalyst or a metal complex catalyst based on the metals cobalt and/or zinc, characterised in that the alkylene oxide contains a proportion of 5 to 50 wt.% ethylene oxide, based on the overall weight of the alkylene oxide used, and the addition of the ethylene oxide is carried out in an atmosphere containing carbon dioxide.
IPC 8 full level
C08G 18/48 (2006.01); C08G 64/18 (2006.01); C08G 64/34 (2006.01); C08G 65/26 (2006.01)
CPC (source: EP US)
C08G 18/44 (2013.01 - EP US); C08G 18/4866 (2013.01 - EP US); C08G 64/183 (2013.01 - EP US); C08G 64/34 (2013.01 - EP US); C08G 65/2663 (2013.01 - EP); C08J 9/122 (2013.01 - US); C08G 2101/00 (2013.01 - US); C08J 2375/04 (2013.01 - US)
Citation (search report)
See references of WO 2021180567A1
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 3878885 A1 20210915; CN 115190893 A 20221014; EP 4118130 A1 20230118; US 2023086177 A1 20230323; WO 2021180567 A1 20210916
DOCDB simple family (application)
EP 20161952 A 20200310; CN 202180020261 A 20210304; EP 2021055507 W 20210304; EP 21709008 A 20210304; US 202117793796 A 20210304