Process for the production of rigid foams from alkaline polyether polyols

The present invention relates to a process for the preparation of rigid foams comprising reacting a polyisocyanate component with an isocyanate-reactive component in the present of a blowing agent. Suitable isocyanate-reactive components for the presently claimed invention comprises polyether polyol...

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Bibliographische Detailangaben
Hauptverfasser:	KANE SCOTT A, TRACY JERRY E, HAIDER KARL W, YEATER ROBERT P
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:	The present invention relates to a process for the preparation of rigid foams comprising reacting a polyisocyanate component with an isocyanate-reactive component in the present of a blowing agent. Suitable isocyanate-reactive components for the presently claimed invention comprises polyether polyols having an OH number of from 200 to 800 and containing from 3 to 8 hydroxyl groups wherein the level of alkalinity present in the polyether polyol is equivalent to a hydroxide ion level of from about 0.006% to about 0.21% by weight.