Foaming polyurethane by carbon dioxide formation

Finely divided synthetic CaSO4.2H2O of particle size below 100 mu, pref. below 50 mu, and an organic isocyanate cpd. (A) are heated with another polyurethane-forming constituent (B) to a temp. at which water of crystallisation is liberated. Rigid and flexible spongy or foamed polyurethanes can be ob...

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Hauptverfasser:	IVAN WILSON,PAUL, VIVIAN-WALTER PERRY,DEREK, FRANK FROUDE,STUART
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	Finely divided synthetic CaSO4.2H2O of particle size below 100 mu, pref. below 50 mu, and an organic isocyanate cpd. (A) are heated with another polyurethane-forming constituent (B) to a temp. at which water of crystallisation is liberated. Rigid and flexible spongy or foamed polyurethanes can be obtained. Foamed polyurethane rubbers suitable for the production of small pre-mouldings.