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    • 9. 发明公开
    • PROCESS FOR THE PREPARATION OF SPHERICAL CATALYST PARTICLES
    • VERFAHREN ZUR HERSTELLUNG VONSPHÄRISCHENKATALYSATOR-PARTIKELN
    • EP3018150A1
    • 2016-05-11
    • EP15192517.9
    • 2015-11-02
    • Indian Oil Corporation Limited
    • SINGH, GurmeetKAUR, SukhdeepBANTU, BhaskerKUMAR, NareshKANT, ShashiKAPUR, Gurpreet SinghBASU, BiswajitMALHOTRA, Ravinder Kumar
    • C08F4/654C08F110/06
    • The present invention describes a process for preparing spherical particles of a catalyst composition, the process comprising contacting an organomagnesium precursor with a transition metal compound in presence of an internal donor to obtain a reaction mixture. Thereafter heating the reaction mixture from a first pre-determined temperature to a second pre-determined temperature and then heating the reaction mixture from second pre-determined temperature to a third pre-determined temperature to obtain spherical particles of the catalyst composition. The present invention also relates to a process for preparing of a spherical catalyst system from said spherical catalyst composition and preparing a spherical polyolefins having free flowing characteristics with bulk densities (BD) of at least about 0.4 g/cc from the spherical catalyst system.
    • 本发明描述了一种制备催化剂组合物的球形颗粒的方法,该方法包括在内部供体存在下使有机镁前体与过渡金属化合物接触以获得反应混合物。 然后将反应混合物从第一预定温度加热至第二预定温度,然后将反应混合物从第二预定温度加热至第三预定温度,以获得催化剂组合物的球形颗粒。 本发明还涉及一种从所述球形催化剂组合物制备球形催化剂体系的方法,并制备具有自球形聚烯烃的球形聚烯烃,该球形聚烯烃具有从球形催化剂体系至少约0.4g / cc的堆积密度(BD)。