SYNDIOTACTIC CRYSTALLINE COPOLYMERS OF PROPYLENE

Essentially syndiotactic crystalline copolymers of propylene with minor proportions of 1-butene, endowed with good mechanical properties, lowered melting point and limited solubility in xylene at 25 DEG C and the process for their preparation by polymerizing mixtures of propylene with 1-butene, by u...

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Bibliographische Detailangaben
Hauptverfasser:	MAZZOCCHI, ROMANO, GALIMBERTI, MAURIZIO, ALBIZZATI, ENRICO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	Essentially syndiotactic crystalline copolymers of propylene with minor proportions of 1-butene, endowed with good mechanical properties, lowered melting point and limited solubility in xylene at 25 DEG C and the process for their preparation by polymerizing mixtures of propylene with 1-butene, by using catalysts obtained from stereorigid and chiral zirconium and hafnium compounds and from polymethylalumoxane compounds.