PROCESS FOR PREPARING ELASTIC POLYURETHANE FOAMS BY MEANS OF MICROWAVE FOAMING

The invention relates to a process for the preparation of an elastic, polyurethane-based foam, in particular for use in the automotive sector for sound insulation. In order to be able to produce the foam parts directly in the desired shape in the fewest possible operations, the invention proposes th...

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Bibliographische Detailangaben
Hauptverfasser:	ACH, ALEXANDER, FRANK, WERNER, WOLLMANN, KLAUS
Format:	Patent
Sprache:	eng ; ger
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 PERFORMING OPERATIONS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR WORKING-UP
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Beschreibung
Zusammenfassung:	The invention relates to a process for the preparation of an elastic, polyurethane-based foam, in particular for use in the automotive sector for sound insulation. In order to be able to produce the foam parts directly in the desired shape in the fewest possible operations, the invention proposes that a mixture of at least one polyurethane precondensate, at least one melamin precondensate and further additives be used for the foaming.