METHOD FOR PREPARING POLYURETHANE FOAMS

METHOD FOR PREPARING POLYURETHANE FOAMS

Described herein is a method for preparing polyurethane foams, including (1) placing a reaction mixture into a pressurizable chamber, and (2) polymerizing the reaction mixture at an additional pressure, where the reaction mixture comprises an isocyanate, an isocyanate-reactive compound and a blowing...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Chien, Wei Liang, Chen, Bo, Xi, Bang Wei, Liu, Jin Lin, Liu, YingHao
Format: Patent
Sprache:eng
Schlagworte:
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
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
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Beschreibung
Zusammenfassung:Described herein is a method for preparing polyurethane foams, including (1) placing a reaction mixture into a pressurizable chamber, and (2) polymerizing the reaction mixture at an additional pressure, where the reaction mixture comprises an isocyanate, an isocyanate-reactive compound and a blowing agent, and the reaction mixture is placed into the pressurizable chamber at a packing factor of 2.0-4.0. Also described herein is a polyurethane foam prepared by such a method.