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    • 22. 发明授权
    • Use of chelatable phenols with metallocene- aluminoxane catalyst systems
    • 使用可螯合酚与茂金属 - 铝氧烷催化剂体系
    • US06281320B1
    • 2001-08-28
    • US09244442
    • 1999-02-04
    • Sun-Chueh KaoFrederick John Karol
    • Sun-Chueh KaoFrederick John Karol
    • C08F1000
    • C08F10/00C08F210/16Y10S526/943C08F4/65925C08F4/65912C08F210/14C08F2500/03
    • This invention comprises a metallocene catalyst system for the production of high molecular weight polyolefins, particularly polyethylene and higher poly-alpha olefins, and copolymers of ethylene and/or alpha olefins with other unsaturated monomers, including diolefins, acetylenically unsaturated monomers and cyclic olefins. The catalyst system is highly active, at low ratios of Al to transition metal, and hence catalyzes the production of a polyolefin product containing low levels of catalyst metal residues. The catalyst system comprises (i) a metallocene precursor (Component A), aluminoxane (Component B), and phenolic modifier (Component C) or (ii) the reaction product of a metallocene precursor with a phenolic compound (Component A′) and aluminoxane (Component B). There is also provide a polymerization process using the catalyst and the product so produced.
    • 本发明包括用于生产高分子量聚烯烃,特别是聚乙烯和更高级聚-α-烯烃的茂金属催化剂体系,以及乙烯和/或α-烯烃与其它不饱和单体(包括二烯烃,炔属不饱和单体和环烯烃)的共聚物。 催化剂体系在Al与过渡金属的低比例下是高活性的,因此催化了含有低水平催化剂金属残余物的聚烯烃产物的生产。 催化剂体系包括(i)茂金属前体(组分A),铝氧烷(组分B)和酚类改性剂(组分C)或(ii)金属茂前体与酚类化合物(组分A')和铝氧烷的反应产物 (组分B)。 还提供使用催化剂和如此制备的产物的聚合方法。