A CATALYST FOR HOMOPOLYMERIZING AND COPOLYMERIZING PROPYLENE AND ITS PREPARATION AND USE

A catalyst for homopolymerizing and copolymerizing propylene and its preparation and use. The catalyst component includes titanium compound containing at least one Ti-halogen bond and at least two kinds of electron donor compounds A and B supported on MgCl 2 .nROH adduct, wherein the electron donor...

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG, Jianying, CUI, Chunming, CUI, Liang, YIN, Baozuo, LI, Zhifei, LI, Huashu, HUANG, Weihuan, WANG, Li, YI, Jianjun
Format:	Patent
Sprache:	eng ; fre ; ger
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:	A catalyst for homopolymerizing and copolymerizing propylene and its preparation and use. The catalyst component includes titanium compound containing at least one Ti-halogen bond and at least two kinds of electron donor compounds A and B supported on MgCl 2 .nROH adduct, wherein the electron donor compound A is a compound of formula (I), the electron donor compound B is ester or ether compound; the molar ratio between compound A and compound B is 0.1-5; the molar ratio between the total amounts of the two kinds of electron donors and MgCl 2 .nROH is 0.01-1, based on the amount of MgCl 2 .nROH; and the molar ration between the titanium compound containing Ti-halogen bond and MgCl 2 .nROH is 1-200. The catalyst has high activity high stereospecificity and good copolymerization performance. In addition, the morphology of the polymer obtained therefrom is good.