发明名称 |
Pre-polymerized catalyst components for the polymerization of olefins |
摘要 |
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=CHR1 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.
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申请公布号 |
US2003040427(A1) |
申请公布日期 |
2003.02.27 |
申请号 |
US20020030466 |
申请日期 |
2002.01.08 |
申请人 |
SACCHETTI MARIO;BRITA DIEGO;COLLINA GIANNI |
发明人 |
SACCHETTI MARIO;BRITA DIEGO;COLLINA GIANNI |
分类号 |
C08F4/40;C08F4/00;C08F4/649;C08F4/655;C08F4/656;C08F10/00;C08F110/02;C08F110/06;(IPC1-7):B01J31/00;C08F4/44 |
主分类号 |
C08F4/40 |
代理机构 |
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代理人 |
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地址 |
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