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Title:
PRE-POLYMERIZED CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS
Document Type and Number:
WIPO Patent Application WO2001085803
Kind Code:
A3
Abstract:
Catalyst components for the preparation of ethylene (co)polymers capable to produce polymers with high bulk density, to avoid the problems of formation of fines and that have a high activity are provided. Said catalyst components are characterized by comprising a non-stereospecific solid catalyst component, comprising a titanium compound and a magnesium dihalide, which is pre-polymerized with an alpha olefin CH2=CHR wherein R is a C1-C8 alkyl group, to such an extent that the amount of the alpha -olefin pre-polymer is up to 100 g per g of said solid catalyst component.

Inventors:
SACCHETTI MARIO (IT)
BRITA DIEGO (IT)
COLLINA GIANNI (IT)
Application Number:
EP0105254W
Publication Date:
July 18, 2002
Filing Date:
May 07, 2001
Export Citation:
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Assignee:
BASELL TECHNOLOGY COMPANY B.V.
SACCHETTI, MARIO
BRITA, DIEGO
COLLINA, GIANNI
International Classes:
C08F4/40; C08F4/00; C08F4/649; C08F4/655; C08F4/656; C08F10/00; C08F110/02; C08F110/06; (IPC1-7): C08F110/02; C08F4/649
Foreign References:
EP0641807A21995-03-08
EP0395083A21990-10-31
US5556820A1996-09-17
EP0522423A21993-01-13
EP0735056A11996-10-02
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