Modified polyurethane liquid polymer compositions and their preparation

A novel heat curable liquid polymer composition comprises a modified urethane oligomer containing terminal ethylenic unsaturation and a free radical catalyst. It is prepared by heating a mixture of the oligomer and the catalyst. In a preferred embodiment. the polymer composition further includes a r...

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Bibliographische Detailangaben
Hauptverfasser:	LICKEI, DONALD LEE, O'CONNOR, JAMES MICHAEL, ROSIN, MICHAEL LEE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS 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:	A novel heat curable liquid polymer composition comprises a modified urethane oligomer containing terminal ethylenic unsaturation and a free radical catalyst. It is prepared by heating a mixture of the oligomer and the catalyst. In a preferred embodiment. the polymer composition further includes a reinforcing agent andor a filler; the cured composition demonstrates enhanced impact properties and is particularly useful in automotive body constructions. The urethane oligomer has a final free NCO content from 0% to 20% and has been prepared by reacting (a) an isocyanate-terminated prepolymer having a final free NCO content ranging from 0.50, to 30% and that is the product of reacting an organic polyisocyanate with a polyol having an average equivalent weight in the range 75 to 500 and an average functionality of at least about 3, with (b) an isocyanate-reactive-group-containing unsaturated acrylate or unsaturated amide monomer.