发明名称 |
BIMETALLIC CATALYST FOR PRODUCING POLYETHYLENE RESINS WITH BIMODAL MOLECULAR WEIGHT DISTRIBUTION, ITS PREPARATION AND USE |
摘要 |
Bimetallic catalyst for producing polyethylene resins with a bimodal molecular weight distribution, its preparation and use. The catalyst is obtainable by a process which includes contacting a support material with an organomagnesium component and carbonyl-containing component. The support material so treated is contacted with a non-metallocene transition metal component to obtain a catalyst intermediate, the latter being contacted with an aluminoxane component and a metallocene component. This catalyst may be further activated with, e.g., alkylaluminum cocatalyst, and contacted, under polymerization conditions, with ethylene and optionally one or more comonomers, to produce ethylene homo- or copolymers with a bimodal molecular weight distribution and improved resin swell properties in a single reactor. These ethylene polymers are particularly suitable for blow molding applications. |
申请公布号 |
CA2427685(A1) |
申请公布日期 |
2002.06.06 |
申请号 |
CA20012427685 |
申请日期 |
2001.10.04 |
申请人 |
EXXONMOBIL CHEMICAL PATENTS INC. |
发明人 |
MINK, ROBERT I.;BARRY, DAVID, B.;DIAMOND, GARY M.;SHIRODKAR, PRADEEP P.;WANG, CHUNMING;NOWLIN, THOMAS E.;ONG, S. CHRISTINE;FRUITWALA, HITESH A. |
分类号 |
C08F4/634;C08F4/6392;C08F4/64;C08F4/642;C08F4/659;C08F4/6592;C08F10/00;C08F10/02;C08F210/02;C08F210/16 |
主分类号 |
C08F4/634 |
代理机构 |
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代理人 |
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地址 |
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