EP 4077437 A1 20221026 - PROCESS FOR PREPARING POLYURETHANES HAVING A HIGH REACTION ENTHALPY
Title (en)
PROCESS FOR PREPARING POLYURETHANES HAVING A HIGH REACTION ENTHALPY
Title (de)
VERFAHREN ZUR HERSTELLUNG VON POLYURETHANEN MIT HOHER REAKTIONSENTHALPIE
Title (fr)
PROCÉDÉ DE PRÉPARATION DE POLYURÉTHANES AYANT UNE ENTHALPIE DE RÉACTION ÉLEVÉE
Publication
Application
Priority
- EP 19216835 A 20191217
- EP 2020085473 W 20201210
Abstract (en)
[origin: WO2021122279A1] The invention relates to a multi-stage process for the continuous preparation of thermoplastic polyurethanes by reacting one or more aliphatic, cycloaliphatic and/or araliphatic diols with one or more aliphatic, cycloaliphatic and/or araliphatic diisocyanates, wherein the total reaction enthalpy is ≤ -500 kJ/kg over all the process stages at a molar ratio of diol to diisocyanate of 1.0:1.0.
IPC 8 full level
C08G 18/08 (2006.01); C08G 18/10 (2006.01); C08G 18/32 (2006.01); C08G 18/73 (2006.01)
CPC (source: EP US)
C08G 18/0895 (2013.01 - EP US); C08G 18/10 (2013.01 - EP US); C08G 18/3206 (2013.01 - EP US); C08G 18/73 (2013.01 - EP); C08J 3/12 (2013.01 - US); C08J 2375/04 (2013.01 - US)
Citation (search report)
See references of WO 2021122279A1
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 3838942 A1 20210623; CN 114761454 A 20220715; EP 4077437 A1 20221026; JP 2023505964 A 20230214; US 2022396655 A1 20221215; WO 2021122279 A1 20210624
DOCDB simple family (application)
EP 19216835 A 20191217; CN 202080087001 A 20201210; EP 2020085473 W 20201210; EP 20820189 A 20201210; JP 2022531057 A 20201210; US 202017782300 A 20201210