THERMALLY REVERSIBLE ISOCYANATE POLYMERS

Thermally-reversible polymer compositions are obtained by reacting compounds with isocyanate and labile-hydrogen func- tionality. High-performance characteristics are incorporated into the polyme r by using polyimide, aromatic polycarbonate, aro- matic polyester, polyphenylene sulfide, and poly(para...

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Bibliographische Detailangaben
Hauptverfasser:	CREMEANS, GEORGE E, MARKLE, RICHARD A, BRUSKY, PHYLLIS L
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	Thermally-reversible polymer compositions are obtained by reacting compounds with isocyanate and labile-hydrogen func- tionality. High-performance characteristics are incorporated into the polyme r by using polyimide, aromatic polycarbonate, aro- matic polyester, polyphenylene sulfide, and poly(parabanic acid) oligomers. Low-temperature flexibility and toughness are im- parted to the polymers by using prepolymers such as polycaprolactone diols, polytetramethylene ether glycols and polyaliphatic carbonate diols. Ionic bonding and liquid-crystal functionality may also be incorporated into the compositions. The compositions are useful as hot-melt adhesives, coatings, and moldings and in injection reaction molding applications and composite and lami- nate fabrication.