EP 4165104 A1 20230419 - PROCESS FOR PRODUCING POLYOXYMETHYLENE-POLYOXYALKYLENE COPOLYMERS
Title (en)
PROCESS FOR PRODUCING POLYOXYMETHYLENE-POLYOXYALKYLENE COPOLYMERS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON POLYOXYMETHYLEN-POLYOXYALKYLEN-COPOLYMEREN
Title (fr)
PROCÉDÉ DE PRODUCTION DE COPOLYMÈRES DE POLYOXYMÉTHYLÈNE-POLYOXYALKYLÈNE
Publication
Application
Priority
- EP 20179673 A 20200612
- EP 2021065107 W 20210607
Abstract (en)
[origin: WO2021249905A1] The present invention relates to a process for producing a polyoxymethylene-polyoxyalkylene copolymer, comprising reacting a polymer formaldehyde compound of an alkylene oxide and a specific component (X) in the presence of a double metal cyanide (DMC) catalyst. The invention further relates to a polyoxymethylene-polyoxyalkylene copolymer that can be obtained by means of such a process and to the use of same for producing a polyurethane polymer.
IPC 8 full level
C08G 65/26 (2006.01); C08G 2/00 (2006.01); C08G 18/56 (2006.01)
CPC (source: EP US)
C08G 2/06 (2013.01 - EP); C08G 2/22 (2013.01 - EP); C08G 18/4866 (2013.01 - EP); C08G 18/56 (2013.01 - EP US); C08G 65/2609 (2013.01 - EP); C08G 65/2663 (2013.01 - EP US)
Citation (search report)
See references of WO 2021249905A1
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 3922661 A1 20211215; EP 4165104 A1 20230419; US 2023212352 A1 20230706; WO 2021249905 A1 20211216
DOCDB simple family (application)
EP 20179673 A 20200612; EP 2021065107 W 20210607; EP 21730230 A 20210607; US 202117926305 A 20210607