发明名称 |
Constrained geometry addition polymerization catalysts, processes for their preparation, precursors therefor, methods of use, and novel polymers formed therewith |
摘要 |
<p>Hafnium or zirconium coordination complexes comprise a cyclopentadienyl or substituted cyclopentadienyl group forming part of a ring structure in which the metal is both bonded to an adjacent amidosilane moiety and held in association with the (substituted) cyclopentadienyl moiety. These complexes form addition polymerization catalysts with activating cocatalysts such as Lewis acids, ammonium salts, oxidizing agents and, especially, aluminum compounds, particularly aluminum trialkyls. Novel polymers, including ElPE resins and pseudo-random copolymers, can be obtained using the catalysts.</p> |
申请公布号 |
EP0764653(A2) |
申请公布日期 |
1997.03.26 |
申请号 |
EP19960119258 |
申请日期 |
1990.08.30 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
STEVENS, JAMES C.;NICKIAS, PETER N.;TIMMERS, FRANCIS J.;ROSEN, ROBERT K.;WILSON, DAVID R.;KNIGHT, GEORGE W.;SCHMIDT, GREGORY F.;LAI, SHIH-YAW |
分类号 |
C07F5/00;C07F7/00;C07F7/02;C07F7/10;C07F7/12;C07F7/28;C07F7/30;C07F9/50;C07F9/6596;C07F17/00;C08F4/44;C08F4/60;C08F4/602;C08F4/623;C08F4/64;C08F4/642;C08F4/643;C08F4/659;C08F4/6592;C08F8/00;C08F10/00;C08F10/02;C08F110/02;C08F110/14;C08F210/00;C08F210/02;C08F210/16;C08F212/08;C08L23/08;C08L23/14;C08L25/06;(IPC1-7):C07F17/00 |
主分类号 |
C07F5/00 |
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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