发明名称 |
HIGH ACTIVITY CARBENIUM-ACTIVATED POLYMERIZATION CATALYSTS |
摘要 |
This application discloses triphenyl carbenium NCA's as catalyst activators for a class of asymmetrically bridged hafnocene catalyst precursors. These catalyst precursors are activated into olefin polymerization catalysts and are suitable for gas, solution, and slurry-phase polymerization reactions. The disclosed bridge is methylenyl- or silanylenyl-based and is optionally, alkyl or aryl substituted. The catalytic activity of the disclosed hafnocene catalyst precursors is substantially enhanced over identical catalysts that are activated with other activators.
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申请公布号 |
WO0129096(A1) |
申请公布日期 |
2001.04.26 |
申请号 |
WO2000US29197 |
申请日期 |
2000.10.23 |
申请人 |
EXXON CHEMICAL PATENTS INC. |
发明人 |
CROWTHER, DONNA, J.;RODRIGUEZ, GEORGE |
分类号 |
C07F17/00;C08F4/645;C08F4/649;C08F4/659;C08F4/6592;C08F10/00;C08F10/02;C08F110/02;C08F210/16;(IPC1-7):C08F10/00 |
主分类号 |
C07F17/00 |
代理机构 |
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