ELASTIC DUROPLAST FOAMS

1. Resilient foams based on thermosetting phenolic resins or polyurethanes (excluding aminoplast foams according to German Laid-Open Applications DOS 2,915,457 and 2,950,289), whose foam structure consists essentially of a large number of interconnected, three-dimensionally branched struts, characte...

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Bibliographische Detailangaben
Hauptverfasser:	WOERNER, FRANK PETER, MAHNKE, HARALD, WEBER, HEINZ
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 METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	1. Resilient foams based on thermosetting phenolic resins or polyurethanes (excluding aminoplast foams according to German Laid-Open Applications DOS 2,915,457 and 2,950,289), whose foam structure consists essentially of a large number of interconnected, three-dimensionally branched struts, characterized by the following properties :- (a) The mean length-to-thickness ratio of the struts is higher than 10:1 ; (b) the percentage proportion M of the cell membranes which are left intact in the foam structure between the struts is less than 40% ; and (c) the percentage proportion P of the pores is less than 15% of the volume of the struts.