COMPATIBILIZED BLENDS OF TEREPHALATE ESTER POLYOLS AND HYDROCARBON BLOWING AGENTS

Formulated polyol compositions contain a terephthalic acid-based polyester polyol, a C4-7 hydrocarbon blowing agent, and a nonionic surfactant that has a hydrophilic-lipophilic balance of greater than 13 to 18.5. The formulated polyol compositions exhibit surprisingly good storage stability and resi...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	LA TERRA, Federico, BERTUCELLI, Luigi, VAIRO, Giuseppe
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Formulated polyol compositions contain a terephthalic acid-based polyester polyol, a C4-7 hydrocarbon blowing agent, and a nonionic surfactant that has a hydrophilic-lipophilic balance of greater than 13 to 18.5. The formulated polyol compositions exhibit surprisingly good storage stability and resist stratifying into layers. The compositions are useful to make rigid polyurethane and/or polyisocyanurate foams. The good compatibility of the blowing agent leads to improved cell structure in the foams. Les compositions de polyol formulées contiennent un polyol de polyester à base d'acide téréphtalique, un agent de soufflage d'hydrocarbures en C4-7, et un tensioactif non ionique qui a un équilibre hydrophile-lipophile supérieur à 13 à 18,5. Les compositions de polyol formulées présentent une stabilité de stockage étonnamment bonne et résistent à la stratification en couches. Les compositions sont utiles pour fabriquer des mousses rigides de polyuréthane et/ou de polyisocyanurate. La bonne compatibilité de l'agent de soufflage conduit à une structure cellulaire améliorée dans les mousses.