EP 4363477 A1 20240508 - PRODUCTION OF PU FOAMS USING RECYCLED POLYOLS
Title (en)
PRODUCTION OF PU FOAMS USING RECYCLED POLYOLS
Title (de)
HERSTELLUNG VON PU-SCHAUMSTOFFEN UNTER EINSATZ VON RECYCLING-POLYOLEN
Title (fr)
PRODUCTION DE MOUSSES DE PU À L'AIDE DE POLYOLS RECYCLÉS
Publication
Application
Priority
- EP 21183446 A 20210702
- EP 2022067701 W 20220628
Abstract (en)
[origin: WO2023275033A1] The invention relates to a method of producing PU foams by reacting (a) at least one polyol component that contains recycled polyol with (b) at least one isocyanate component in the presence of (c) one or more catalysts that catalyze the reactions of isocyanate-polyol and/or isocyanate-water and/or the isocyanate trimerization reaction, (d) at least one foam stabilizer and (e) optionally one or more chemical or physical blowing agents, and the recycled polyol contains 2,4-toluenediamine, 2,6-toluenediamine, 2,2'-diaminodiphenylmethane, 2,4'-diaminodiphenylmethane and/or 4,4'-diaminodiphenylmethane in a total amount of 0.00001% to 0.4% by weight, preferably 0.00002% to 0.2% by weight, especially preferred 0.00005% to 0.1% by weight relative to the total of recycled polyol.
IPC 8 full level
C08G 18/24 (2006.01); C08G 18/28 (2006.01); C08G 18/48 (2006.01); C08G 18/76 (2006.01)
CPC (source: EP)
C08G 18/244 (2013.01); C08G 18/2825 (2013.01); C08G 18/4829 (2013.01); C08G 18/7621 (2013.01); C08G 2110/0008 (2021.01)
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)
WO 2023275033 A1 20230105; CA 3224253 A1 20230105; CN 117580884 A 20240220; EP 4363477 A1 20240508
DOCDB simple family (application)
EP 2022067701 W 20220628; CA 3224253 A 20220628; CN 202280046704 A 20220628; EP 22738451 A 20220628