发明名称 |
Verfahren zur Herstellung von Ethylenpolymeren |
摘要 |
<p>The present invention relates to a process for the preparation of ethylene homopolymer or ethylene interpolymer, comprising contacting ethylene and optionally one or more C2-C20 olefins with a catalyst composition under polymerization conditions, wherein said catalyst composition is: a) a metal coordination complex comprising a metal atom of groups 3-10 or the Lanthanide series of the Periodic Table of the Elements and a delocalized pi -bonded moiety substituted with a constrain inducing moiety, said complex having a constrained geometry about the metal atom such that the angle at the metal atom between the centroid of the delocalized, substituted pi -bonded moiety and the center of at least one remaining substituent is less than such angle in a similar complex containing a similar pi -bonded moiety lacking in such constrain-inducing substituent, and provided further that for such complexes comprising more than one delocalized, substituted pi -bonded moiety, only one thereof for each metal atom of the complex is a cyclic, delocalized, substituted pi -bonded moiety, and b) an activating cocatalyst, characterized in that the process is a continuous process comprising continuously contacting said ethylene and optionally one or more C2-C20 olefins with said catalyst composition. In addition, the invention relates to ethylene homo-, co- or interpolymer obtainable by this process, and the use of said catalyst composition as a continuous ethylene homo-, co- or interpolymerization catalyst. <IMAGE></p> |
申请公布号 |
DE69228265(T2) |
申请公布日期 |
1999.06.02 |
申请号 |
DE1992628265T |
申请日期 |
1992.10.15 |
申请人 |
THE DOW CHEMICAL CO., MIDLAND, MICH., US |
发明人 |
LAI, SHIH-YAW, SUGAR LAND, TEXAS 77479, US;STEVENS, JAMES C., RICHMOND, TEXAS 77469, US;WILSON, JOHN R., RICHWOOD, TEXAS 77531, US;KNIGHT, GEORGES W., LAKE JACKSON, TEXAS 77566, US |
分类号 |
C08J5/00;B29C47/00;B29C47/02;B32B27/08;B32B27/32;C08F4/60;C08F4/605;C08F4/622;C08F4/64;C08F4/642;C08F4/656;C08F4/659;C08F4/6592;C08F10/00;C08F10/02;C08F110/00;C08F110/02;C08F210/16;C08G83/00;C08J5/18;C08J9/06;C08L23/00;C08L23/02;C08L23/04;C08L23/06;C08L23/08;C08L23/16;D01F6/04;D01F8/06;D04H1/42;D21H19/20;(IPC1-7):C08F10/02 |
主分类号 |
C08J5/00 |
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地址 |
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