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 GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS 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 TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS 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 and/or a filler; the cured composition demonstrates enhanced impact properties and is particularly useful in automotive body constructions. … The urethane oligomer has an equivalent ratio of MCO to OH from 0.5:1 to 2:1 and has been prepared by reacting… (a) an isocyanate-terminated prepolymer having a final free MCO content ranging from 0.5% to 30% and that is the product of reacting an organic polyisocyanate with an isocyanate-reactive-group-containing unsaturated acrylate andior unsaturated amide monomer, with… (b) a polyol having an average equivalent weight in the range 75 to 500 and an average functionality of at least about 3.