发明名称 |
THE PREPARATION AND USE OF A NEW ZIEGLER-NATTA CATALYST COMPONENT |
摘要 |
The invention relates to a method for the preparation of a supported procatalyst intended for the polymerization of olefines, in which particles are formed of magnesium dihalide and alcohol, the particles are reacted with an organic compound of a metal from the groups I-III, the thus obtained particulate product is activated by means of a titanium and/or vanadium compound and optionally a donor, and optionally a prepolymerization is carried out for the activated particles. A problem of such a method is how to form particles of magnesium dihalogenide and alcohol having a structure advantageous for the polymerization of olefins. The problem has in the present invention been solved so that the particles are formed by spray crystallizing (spray freezing) a mixture of magnesium dihalide and alcohol to complex particles of magnesium dihalide and alcohol. The hydroxyl content of the particles so obtained is much greater than earlier, which results in a much more active procatalyst than the preceding ones.
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申请公布号 |
CA2006461(C) |
申请公布日期 |
1999.08.17 |
申请号 |
CA19892006461 |
申请日期 |
1989.12.21 |
申请人 |
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发明人 |
KORVENOJA, TARJA;KOSTIAINEN, ARJA;IISKOLA, EERO;SORMUNEN, PEKKA;GUSTAFSSON, BILL;KNUUTTILA, HILKKA;PALMQVIST, ULF |
分类号 |
C08F4/60;C08F4/638;C08F10/00;(IPC1-7):C08F4/76;C08F10/02 |
主分类号 |
C08F4/60 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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