EP 3504254 A1 20190703 - PROCESS FOR PRODUCING POLYMER FOAMS COMPRISING IMIDE GROUPS
Title (en)
PROCESS FOR PRODUCING POLYMER FOAMS COMPRISING IMIDE GROUPS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON IMIDGRUPPEN ENTHALTENDEN POLYMERSCHÄUMEN
Title (fr)
PROCÉDÉ POUR LA PRÉPARATION DE MOUSSES POLYMÈRES CONTENANT DES GROUPES IMIDE
Publication
Application
Priority
- EP 16185843 A 20160826
- EP 2017070923 W 20170818
Abstract (en)
[origin: WO2018036921A1] The present invention relates to a process for producing a polymer foam comprising reacting components A to C in the presence of component D and optionally E or of an isocyanate-functional prepolymer of components A and B with component C in the presence of component D and optionally E, the total amount of which is 100 wt%, (A) 35 to 75 wt% of at least one polyisocyanate component A, wherein 10 to 100 wt% of component A is a condensation product comprising polyimide groups and obtained by condensing at least one polyisocyanate component with at least one polycarboxylic acid having at least 3 COOH groups per molecule or anhydride thereof, (B) 5 to 50 wt% of at least one polyol component B, (C) 1 to 10 wt% of water as component C, and (D) 0.01 to 3 wt% of at least one Lewis base component D, (E) 0 to 5 wt% of at least one foam stabilizer component E, wherein said reacting is effected to release carbon dioxide.
IPC 8 full level
C08G 18/20 (2006.01); C08G 18/30 (2006.01); C08G 18/48 (2006.01); C08G 18/78 (2006.01); C08G 101/00 (2006.01)
CPC (source: EP US)
C08G 18/2027 (2013.01 - EP US); C08G 18/302 (2013.01 - EP US); C08G 18/42 (2013.01 - US); C08G 18/4825 (2013.01 - EP US); C08G 18/7812 (2013.01 - EP US); C08G 18/7881 (2013.01 - US); C08J 9/0042 (2013.01 - US); C08J 9/0061 (2013.01 - US); C08J 9/08 (2013.01 - US); C08J 9/125 (2013.01 - US); C08G 2110/0025 (2021.01 - EP US); C08G 2110/005 (2021.01 - EP US); C08G 2110/0058 (2021.01 - US); C08G 2110/0066 (2021.01 - US); C08G 2110/0083 (2021.01 - EP US); C08J 2203/02 (2013.01 - US); C08J 2203/10 (2013.01 - US); C08J 2205/10 (2013.01 - US); C08J 2375/04 (2013.01 - US)
Citation (search report)
See references of WO 2018036921A1
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 2018036921 A1 20180301; CN 109642007 A 20190416; EP 3504254 A1 20190703; US 2019185611 A1 20190620
DOCDB simple family (application)
EP 2017070923 W 20170818; CN 201780052616 A 20170818; EP 17755161 A 20170818; US 201716328086 A 20170818