POLYURETHANE FOAM PREMIXES CONTAINING HALOGENATED OLEFIN BLOWING AGENTS AND FOAMS MADE FROM SAME

Foam premix formulations do not achieve acceptable results in storage stability. The invention relates to a foamable composition and methods for the preparation thereof. The foamable composition comprises a hydrohaloolefin blowing agent, one or more polyols, one or more surfactants, and a catalyst s...

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Bibliographische Detailangaben
Hauptverfasser:	POSS, ANDREW J, GITTERE, CLIFFORD P, BOGDAN, MARY C, WILLIAMS, DAVID J
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 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
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Beschreibung
Zusammenfassung:	Foam premix formulations do not achieve acceptable results in storage stability. The invention relates to a foamable composition and methods for the preparation thereof. The foamable composition comprises a hydrohaloolefin blowing agent, one or more polyols, one or more surfactants, and a catalyst system comprising at least one precipitation resistant metal catalyst. The catalyst comprises a first precipitation resistant catalyst based on a first metal and a second precipitation resistant metal catalyst based on a second metal. The first precipitation resistant metal catalyst and the second precipitation resistant metal catalyst are based upon different metals and comprise a metal in a complex and/or composition with an amidine compound and/or in a complex and/or composition with an aliphatic, aromatic or polymeric carboxylate. The invention also relates to a foam formed from the foamable composition for use in thermal insulation, cushioning, flotation, packaging, adhesives, void filling, crafts and decoration or shock absorption. L'invention concerne des mousses de polyuréthane et de polyisocyanurate, ainsi que des procédés pour les préparer. Plus particulièrement, l'invention concerne des mousses de polyuréthane et de polyisocyanurate à cellules fermées et des procédés pour les préparer. Les mousses se caractérisent par une structure cellulaire uniforme fine, avec peu ou pas d'affaissement. Les mousses sont produites à partir d'une composition de polyol en prémélange qui comprend une combinaison d'un agent gonflant à base d'hydrohalo-oléfine, d'un polyol, d'un agent tensio-actif à la silicone et d'un catalyseur non aminique utilisé seul ou en combinaison avec un catalyseur aminique.