EP 4355820 A1 20240424 - METHOD FOR CLEAVING POLYURETHANE PRODUCTS
Title (en)
METHOD FOR CLEAVING POLYURETHANE PRODUCTS
Title (de)
VERFAHREN ZUR SPALTUNG VON POLYURETHANPRODUKTEN
Title (fr)
PROCÉDÉ DE DISSOCIATION DE PRODUITS DE POLYURÉTHANE
Publication
Application
Priority
- EP 21179237 A 20210614
- EP 22171964 A 20220506
- EP 2022065933 W 20220613
Abstract (en)
[origin: WO2022263336A1] The invention relates to a method for cleaving polyurethane products, having the steps of (A) providing a polyurethane product which is based on isocyanate components and a polyol component; (B) reacting the polyurethane product with a monofunctional araliphatic alcohol in the presence of an alcoholysis catalyst, thereby obtaining a product mixture containing a liquid polyol phase and a solid carbamate of an isocyanate of the isocyanate component and the monofunctional araliphatic alcohol; and (C) separating the carbamate from the product mixture, thereby leaving the liquid polyol phase.
IPC 8 full level
C08J 11/24 (2006.01)
CPC (source: EP)
C08J 11/24 (2013.01); C08J 2375/04 (2013.01)
Citation (search report)
See references of WO 2022263336A1
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)
DOCDB simple family (application)
EP 2022065933 W 20220613; EP 22733406 A 20220613