IN-SITU FORMED POLYETHER POLYOLS, PROCESSES FOR THEIR PREPARATION, AND PROCESSES FOR THE PREPARATION OF POLYURETHANE FOAMS

This invention relates to an in-situ formed polyether polyol blend having an overall functionality of 2 to 3 and an overall hydroxyl number of 40 to 220 mg KOH/g. A process for preparing these in-situ formed polyether polyol blends is also disclosed. These in-situ formed polyether polyol blends are...

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Bibliographische Detailangaben
Hauptverfasser:	REESE, Jack R, LEWIS, Sharlene A
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	This invention relates to an in-situ formed polyether polyol blend having an overall functionality of 2 to 3 and an overall hydroxyl number of 40 to 220 mg KOH/g. A process for preparing these in-situ formed polyether polyol blends is also disclosed. These in-situ formed polyether polyol blends are suitable for a process of preparing viscoelastic flexible polyurethane foams. La présente invention concerne un mélange de polyol de polyéther formé in situ ayant une fonctionnalité globale de 2 à 3 et un indice d'hydroxyle global de 40 à 220 mg KOH/g. L'invention concerne également un procédé de préparation de ces mélanges de polyol de polyéther formés in situ. Ces mélanges de polyol de polyéther formés in situ sont appropriés pour un procédé de préparation de mousses de polyuréthane souples viscoélastiques.