PROCESS OF MAKING MODIFIED METALLOCENE CATALYST, CATALYST PRODUCED AND USE THEREOF

PROBLEM TO BE SOLVED: To provide a catalyst and a catalyst system, allowing for making of an active polymer having a low melt index or a high molecular weight.SOLUTION: An olefin polymerization catalyst or a catalyst system comprises a mixture, a contact product, a reaction product or a complex comp...

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Bibliographische Detailangaben
Hauptverfasser: HUA FENGJUN, STEPHEN R SCHMIDT, MICHAEL D JENSEN, MICHAEL J ELDER, PATRICK J KERWIN, ANDREW G SINGLETON, JOHN H HAIN JR
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a catalyst and a catalyst system, allowing for making of an active polymer having a low melt index or a high molecular weight.SOLUTION: An olefin polymerization catalyst or a catalyst system comprises a mixture, a contact product, a reaction product or a complex comprising, as components: (A) at least one metallocene pre-catalyst compound or polymerization active metallocene compound; (B) at least one titanium- containing metallocene compound; and when (A) is a metallocene pre-catalyst compound, (C) at least one activator, provided that (I) the titanium-containing metallocene compound is inactive or substantially inactive for the polymerization of olefins prior to or concurrently with the use of the catalyst system for olefin polymerization. A preferred catalyst comprises a zirconium or hafnium-containing metallocene, an inactivated titanocene and a SiOsupport carrier.SELECTED DRAWING: None 【課題】活性で、低いメルトインデックス又は高分子量ポリマーを生産することができる触媒及び触媒系を提供する。【解決手段】成分として:(A)少なくとも1つのメタロセンプレ触媒化合物または重合−活性メタロセン化合物;(B)少なくとも1つのチタン含有メタロセン化合物および(A)がメタロセンプレ触媒化合物である場合、(C)少なくとも1つのアクチベータ化合物を含んでなる混合物、接触生成物、反応生成物または錯体を含んでなるオレフィン重合触媒または触媒系であり、ただし:(I)チタン含有メタロセン化合物はオレフィンの重合用の触媒系の使用前またはそれと同時にはオレフィンの重合には不活性であるかまたは実質的に不活性である。好適な触媒はジルコニウムまたはハフニウム含有メタロセン、非活性化チタノセンおよびSiO2支持担体を含む。【選択図】なし