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1. (WO2018219893) POLYURETHANE FOAMS BASED ON POLYETHERCARBONATE POLYOLS

Pub. No.:    WO/2018/219893    International Application No.:    PCT/EP2018/063985
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Wed May 30 01:59:59 CEST 2018
IPC: C08G 18/48
C08G 18/76
C08G 18/34
C08G 18/44
Applicants: COVESTRO DEUTSCHLAND AG
Inventors: THOMOPOULOU, Persefoni
LINDNER, Stefan
NEFZGER, Hartmut
ALBACH, Rolf
WEHLAU, Antje
Title: POLYURETHANE FOAMS BASED ON POLYETHERCARBONATE POLYOLS
Abstract:
The present invention relates to a method for producing polyurethane foams by reacting an isocyanate component with a component that is reactive to isocyanates and comprises at least one polyethercarbonate polyol, wherein the reaction is performed in the presence of a component K, wherein the component K is selected from one or more compounds of the group consisting of K1 dicarbonyl compounds according to formula (II), except for dicarbonyl compounds that are esters of monobasic or polybasic carboxylic acids, (R2)x-(C=O)-(R1)n-(C=O)-(R3)y (II), K2 ß-ketonitriles according to formula (III), (R5)w-(C=O)-C(H)(R4)(-CN) (III), K3 discarbonyl compounds with formula (IV), K4 hydroxycarboxylic acids, preferably are α-hydroxycarboxylic acids or ß-hydroxycarboxylic acids, K5 carboxylic acid salts. The invention also relates to polyurethane foams produced by the method according to the invention and to the use thereof.