EP 3983473 A1 20220420 - METHOD FOR PREPARING POLYETHER CARBONATE POLYOLS
Title (en)
METHOD FOR PREPARING POLYETHER CARBONATE POLYOLS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON POLYETHERCARBONATPOLYOLEN
Title (fr)
PROCÉDÉ POUR LA PRÉPARATION DE POLYÉTHERCARBONATEPOLYOLS
Publication
Application
Priority
- EP 19179325 A 20190611
- EP 20157273 A 20200213
- EP 2020065251 W 20200603
Abstract (en)
[origin: WO2020249433A1] The invention relates to a method for preparing polyether carbonate polyols by means of the following steps: (i) adding alkylene oxide and carbon dioxide onto an H-functional starter substance in the presence of a double metal cyanide catalyst or a metal complex catalyst based on the metals zinc and/or cobalt to obtain a reaction mixture containing the polyether carbonate polyol, (ii) introducing at least one component K to the reaction mixture containing the polyether carbonate polyol, characterised in that the component K is at least one compound selected from the group consisting of monocarboxylic acids, polycarboxylic acids, hydroxycarboxylic acids and vinylogous carboxylic acids, wherein compounds containing a phosphorus-oxygen bond or compounds of phosphorus that can form one or more P-O bonds through reaction with OH-functional compounds, and acetic acid are excluded from component K.
IPC 8 full level
C08G 65/26 (2006.01); C08G 64/34 (2006.01); C08G 64/42 (2006.01)
CPC (source: EP US)
C08G 64/34 (2013.01 - EP); C08G 64/42 (2013.01 - EP); C08G 65/2615 (2013.01 - US); C08G 65/2663 (2013.01 - US); C08G 65/2696 (2013.01 - US); C08G 65/26 (2013.01 - EP)
Citation (search report)
See references of WO 2020249433A1
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 2020249433 A1 20201217; CN 113906081 A 20220107; EP 3983473 A1 20220420; US 2022227928 A1 20220721
DOCDB simple family (application)
EP 2020065251 W 20200603; CN 202080042975 A 20200603; EP 20728786 A 20200603; US 202017607256 A 20200603