Production of polyureas using recycled polyurethanes and polyureas

Already-prepared polyureas and polyurethanes, such as scrap from RIM processes, can be recycled by dissolving them in polyoxyalkyleneamines and reacted with polyisocyanates. The solutions of polyureas and polyurethanes in polyoxyalkylene amines can be reacted with polyisocyanates to form polyureas i...

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Bibliographische Detailangaben
Hauptverfasser:	CUSCURIDA, MICHAEL, DOMINGUEZ, RICHARD J.G, PRIMEAUX II, DUDLEY JOSEPH, GRIGSBY, ROBERT ALLISON, JR
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Already-prepared polyureas and polyurethanes, such as scrap from RIM processes, can be recycled by dissolving them in polyoxyalkyleneamines and reacted with polyisocyanates. The solutions of polyureas and polyurethanes in polyoxyalkylene amines can be reacted with polyisocyanates to form polyureas in RIM, spray, foam or thermoplastic materials or in paints.