发明名称 |
NEW METALLOCENE COMPOUNDS, CATALYSTS COMPRISING THEM, PROCESS FOR PRODUCING AN OLEFIN POLYMER BY USE OF THE CATALYSTS, AND OLEFIN HOMO- AND COPOLYMERS. |
摘要 |
<p>Certain metallocene compounds are provided that, when used as a component in a supported polymerization catalyst under industrially relevant polymerization conditions, afford high molar mass homo polymers or copolymers like polypropylene or propylene/ethylene copolymers without the need for any α -branched substituent in either of the two available 2- positions of the indenyl ligands. The substituent in the 2-position of one indenyl ligand can be any radical comprising hydrogen, methyl, or any other C2-C40 hydrocarbon which is not branched in the α -position, and the substituent in the 2-position of the other indenyl ligand can be any C5-C40 hydrocarbon radical with the proviso that this hydrocarbon radical is branched in the β-position and that the β-carbon atom is a quarternary carbon atom and part of a mono-cyclic hydrocarbon system. This metallocene topology affords high melting point, very high molar mass homo polypropylene and very high molar mass propylene-based copolymers. Furthermore, the activity/productivity levels of catalysts comprising the metallocenes of the present invention are exceptionally high.</p> |
申请公布号 |
MX2011006667(A) |
申请公布日期 |
2011.07.20 |
申请号 |
MX20110006667 |
申请日期 |
2008.12.31 |
申请人 |
LUMMUS NOVOLEN TECHNOLOGY GMBH. |
发明人 |
DIMESKA, ANITA;THORN, MATTHEW, GRANT;WINTER, ANDREAS;SELL, THORSTEN;LANGHAUSER, FRANZ |
分类号 |
C08F10/06;C08F4/642 |
主分类号 |
C08F10/06 |
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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