FLEXIBLE, OPEN-CELL THERMOSET FOAMS AND BLOWING AGENTS AND METHODS FOR MAKING SAME

Disclosed are methods and compositions for forming a flexible, open cell molded foams based on MDI-based isocyanate comprising at least one polymer polyol present in the composition in an amount of at least about 6 pphp; one or more components capable of forming a thermoset matrix; and a blowing age...

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Bibliographische Detailangaben
1. Verfasser:	GROSSMAN, Ronald, S
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 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 PERFORMING OPERATIONS SEATS SPECIALLY ADAPTED FOR VEHICLES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDEDFOR VEHICLES IN GENERAL WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	Disclosed are methods and compositions for forming a flexible, open cell molded foams based on MDI-based isocyanate comprising at least one polymer polyol present in the composition in an amount of at least about 6 pphp; one or more components capable of forming a thermoset matrix; and a blowing agent comprising at least one chemical blowing agent, such as water, and at least one physical blowing agent selected from the group consisting of trans- 1 - chloro-3,3,3-trifluoropropene (HFC0-1233zd(E)), 1,1,1,3,3-pentafluoropropane (HFC-245fa); 1,1,1,3,3-pentafluorobutane (365mfc), blends consisting essentially of at least about 80% of HFC-365mfc and 1,1,1,2,3,3,3-heptafluoropropane (227ea), and combinations of any two or more of these. Sont divulgués des procédés et des compositions pour former des mousses moulées souples à alvéoles ouverts à base d'isocyanate à base de MDI comprenant au moins un polyol polymère présent dans la composition à raison d'au moins environ 6 pphp ; un ou plusieurs composants capables de former une matrice thermodurcie ; et un agent d'expansion comprenant au moins un agent d'expansion chimique, tel que l'eau, et au moins un agent d'expansion physique choisi dans le groupe constitué du trans-1-chloro-3,3,3-trifluoropropène (HFC0-1233zd(E)), 1,1,1,3,3-pentafluoropropane (HFC-245fa) ; 1,1,1,3,3-pentafluorobutane (365mfc), des mélanges constitués essentiellement d'au moins environ 80% de HFC-365mfc et de 1,1,1,2,3,3,3-heptafluoropropane (227ea), et des combinaisons d'au moins deux quelconques de ces derniers.