A PROCESS FOR PRODUCING FOAMED PLASTICS MATERIALS

In the disclosed process of producing resilient open-celled, cross-linked polyurethane foams, by foaming polyol, polyisocyanate, catalyst and blowing agent, the foaming is effected in the presence of a cross-linker which is a saturated or unsaturated, aliphatic, cycloaliphatic, heteroaliphatic or ar...

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Bibliographische Detailangaben
Hauptverfasser:	KOLLMEIER H, ROSSMY G
Format:	Patent
Sprache:	eng
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:	In the disclosed process of producing resilient open-celled, cross-linked polyurethane foams, by foaming polyol, polyisocyanate, catalyst and blowing agent, the foaming is effected in the presence of a cross-linker which is a saturated or unsaturated, aliphatic, cycloaliphatic, heteroaliphatic or arylaliphatic crystalline polyhydroxy compound having at least 3 hydroxy groups. The crystalline polyhydroxy compound is insoluble or only slightly soluble in the polyol to be foamed and melts within the temperature range of about 60 DEG -160 DEG C. The amount of crystalline polyhydroxy compound to be used corresponds to about 0.1-5.0 hydroxy equivalent weights per 1 hydroxy equivalent weight of the polyol to be foamed.