Polyurethane elastomers from polyisocyanates and polyester ether polyols

Die Erfindung betrifft Polyurethanelastomere hergestellt durch Umsetzung von Polyisocyanaten mit Polyesterpolyetherpolyolen (Diesterpolyetherdiolen) nach dem Reaktionsspritzgußverfahren (reaction injection molding, RIM). Polyurethane (PU) elastomers (I), opt. contg. urea units, based on (a) a liq.,...

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Bibliographische Detailangaben
Hauptverfasser:	MAYER, EDUARD, GROENEN, JUERGEN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 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:	Die Erfindung betrifft Polyurethanelastomere hergestellt durch Umsetzung von Polyisocyanaten mit Polyesterpolyetherpolyolen (Diesterpolyetherdiolen) nach dem Reaktionsspritzgußverfahren (reaction injection molding, RIM). Polyurethane (PU) elastomers (I), opt. contg. urea units, based on (a) a liq., aliphatic and/or alicyclic polyisocyanate component, (b) a NCO-reactive component with an average mol. wt. of 1000-6000 and a mean functionality of at least 2, (c) NCO- reactive cpds. with a mol. wt. of less than 1000, pref. less than 500, at least one of which has a functionality of at least 2, (d) 1-30 wt% filers (w.r.t. elastomer), and opt. (e) conventional PU additives etc. At least one of the NCO-reactive cpds. in component (c) is a polyhydroxy cpd. based on a polyester-ether- polyol (II). Also claimed is a reaction injection moulding (RIM) process for the prodn. of opt. cellular, elastic mouldings with a closed surface layer and a density of more than 0.9 g/cm , made from (I) which is produced with a NCO index of 90-120.