Title:
PROCESS AND APPARATUS FOR MAKING SUPPORTED CATALYST SYSTEMS FOR OLEFIN POLYMERISATION
Document Type and Number:
WIPO Patent Application WO2001044319
Kind Code:
A3
Abstract:
A process to support a homogeneous catalyst on a porous solid support is performed in two separate zones. In a first zone the solid is contacted, under stirring, with an amount of a catalyst solution lower than the total pore volume of the solid. In a second zone the solid is dried from the solvent while flowing under pneumatic conveying. A loop circulation of solid is established between the two zones, so that the solid is subject to more contacting steps. The process is particularly suitable to support a metallocene-alumoxane polymerisation catalyst on a porous prepolymer. The process can be advantageously performed in continuous, thus fitting the needs of an industrial scale production process.
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Inventors:
COVEZZI MASSIMO (IT)
FAIT ANNA (IT)
FAIT ANNA (IT)
Application Number:
PCT/EP2000/012930
Publication Date:
December 27, 2001
Filing Date:
December 14, 2000
Export Citation:
Assignee:
BASELL TECHNOLOGY CO BV (NL)
COVEZZI MASSIMO (IT)
FAIT ANNA (IT)
COVEZZI MASSIMO (IT)
FAIT ANNA (IT)
International Classes:
B01J8/00; B01J8/10; B01J8/22; B01J19/18; B01J31/12; B01J31/14; B01J31/16; B01J31/22; B01J37/02; C08F4/602; C08F4/02; C08F4/60; C08F4/6192; C08F4/69; C08F10/00; C08F4/659; C08F4/6592; C08F110/02; C08F110/06; (IPC1-7): B01J19/18; B01J8/10; B01J8/22; B01J8/00; B01J37/02; B01J31/22; C08F4/02; C08F4/60; C08F10/00
Domestic Patent References:
| WO1995011263A1 | 1995-04-27 | |||
| WO1996014155A1 | 1996-05-17 |
Foreign References:
| EP0431648A1 | 1991-06-12 | |||
| US4220803A | 1980-09-02 | |||
| EP0209253A1 | 1987-01-21 | |||
| US5424262A | 1995-06-13 |
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