发明名称 |
Olefins produced from pre-polymerized catalyst component catalysts |
摘要 |
Olefin polymers produced using components of catalysts obtained by contacting a Ti compound of formula Ti(OR)n-yXy, where n is the valence of titanium and y is a number between 1 and n, with a pre-polymer having a porosity higher than 0.3 cc/g and containing from 0.5 to 100 g of polymer per g of solid catalyst component, the pre-polymer being obtained by (co)polymerizing an olefin or a diolefin in the presence of a catalyst comprising a Ti, V, Zr or Hf compound supported on a Mg dihalide having a mean crystallite dimension lower than 30 nm.
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申请公布号 |
US6797794(B2) |
申请公布日期 |
2004.09.28 |
申请号 |
US20020202524 |
申请日期 |
2002.07.24 |
申请人 |
BASELL POLIOLEFINE ITALIA S.P.A. |
发明人 |
ZAMBON LICIO;SACCHETTI MARIO;VITALE GIANNI |
分类号 |
C08F4/651;C08F4/64;C08F4/642;C08F4/6592;C08F10/00;(IPC1-7):C08F110/06 |
主分类号 |
C08F4/651 |
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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