VISCOELASTIC POLYURETHANE FOAMS

Viscoelastic foams and a process for making them are disclosed. The foams ar e produced with a unique isocyanate--reactive mixture that includes a low equivalent weight polyol and from about 15 to about 70 wt % of a polyester or polyoxyalkylene monol having a number average equivalent weight greater...

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Bibliographische Detailangaben
Hauptverfasser:	TRIOULEYRE, SEBASTIEN P, HAGER, STANLEY L, JIVIDEN, VERIL C, JOULAK, FAOUZI
Format:	Patent
Sprache:	eng ; fre
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:	Viscoelastic foams and a process for making them are disclosed. The foams ar e produced with a unique isocyanate--reactive mixture that includes a low equivalent weight polyol and from about 15 to about 70 wt % of a polyester or polyoxyalkylene monol having a number average equivalent weight greater than about 1000. The monol is the key to formulating excellent viscoelastic foams over a broad range of processing conditions and isocyanate indices. A"reactive" monol gives TDI-based viscoelastic foams with improved "hand feel" and reduced levels of residual toluenediamines.