PRODUCTION OF POLYURETHANE MATERIAL

PURPOSE:To produce a polyurethane material excellent in strength, rubber elasticity, etc., by polymerizing a polyisocyanate with a specified polyhydroxyl compound substantially grafted with a vinyl monomer. CONSTITUTION:Use is made of a polyhydroxyl compound obtained by reacting a polyether-polyol,...

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Bibliographische Detailangaben
Hauptverfasser:	ISHIZUKA YOSHITSUGU, KUNO JIYUNICHI, BABA YUUJI, SONODA KATSUHIKO
Format:	Patent
Sprache:	eng
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:	PURPOSE:To produce a polyurethane material excellent in strength, rubber elasticity, etc., by polymerizing a polyisocyanate with a specified polyhydroxyl compound substantially grafted with a vinyl monomer. CONSTITUTION:Use is made of a polyhydroxyl compound obtained by reacting a polyether-polyol, e.g., poly(oxyethylene/oxypropylene) glycol, with itaconic acid at 170-230 deg.C to form a polyester by esterification, thermal polymerization and isomerization, and graft-polymerizing a vinyl compound (e.g., styrene) with the polyester. Namely, a polyisocyanate (e.g., 2,4-toluylene diisocyanate) is mixed with the above polyhydroxyl compound, a catalyst, a blowing agent, a foam stabilizer, etc., and the mixture is expanded by reaction.