Thermoplastische Polyurethan-Elastomere

A process for the prodn. of thermoplastic polyurethane (PU) elastomers (I) from polyisocyanate(s) (A) and a mixt. (B) contg. Zerewitinoff-reactive H atoms (active H), comprising (1) 1-85 equiv.% (w.r.t. NCO gps. in A) of cpd(s). with at least 1.8 active H (on average) and a mol. wt. of 400-10,000, (...

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Bibliographische Detailangaben
Hauptverfasser:	ULLRICH, MARTIN., 51375 LEVERKUSEN, DE, MUELLER, HANNS-PETER. DR., 51519 ODENTHAL, DE, LIESENFELDER, ULRICH., 51469 BERGISCH GLADBACH, DE, KIRCHMEYER, STEPHAN. DR., 51375 LEVERKUSEN, DE
Format:	Patent
Sprache:	ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	A process for the prodn. of thermoplastic polyurethane (PU) elastomers (I) from polyisocyanate(s) (A) and a mixt. (B) contg. Zerewitinoff-reactive H atoms (active H), comprising (1) 1-85 equiv.% (w.r.t. NCO gps. in A) of cpd(s). with at least 1.8 active H (on average) and a mol. wt. of 400-10,000, (2) 15-99 equiv.% chain extender(s) with at least 1.8 active H and a mol. wt. of 62-400 and opt. (3) 0-20 wt% (w.r.t. total amt. of I) other conventional additives, etc. (C). The process comprises (a) homogeneously mixing (A) and (B) in a static mixer under conditions such that no reaction occurs and (b) transferring the mixt. to a sec. static mixer in which (A) and (B) react together. Also claimed are thermoplastic PU elastomers (I) obtd. by this process.