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    • 7. 发明授权
    • Process of producing self-supported catalysts
    • 生产自支撑催化剂的工艺
    • US06677265B1
    • 2004-01-13
    • US09595634
    • 2000-06-16
    • Brian KnealeJames E. BooneSteven P. DiefenbachCecil P. LoecheltJohn C. Prindle, Jr.
    • Brian KnealeJames E. BooneSteven P. DiefenbachCecil P. LoecheltJohn C. Prindle, Jr.
    • C08F402
    • C08F10/02C08F4/65912C08F4/65927C08F110/02C08F2/06C08F4/6492C08F2500/18
    • The process features concurrent feeds into the liquid phase of a prepolymerization reaction mixture. These feeds are: a) separate continuous or substantially continuous feeds of (i) a polymerizable vinylolefin, and (ii) a solution in an organic liquid solvent of a metallocene and an aluminoxane and/or metallocene-aluminoxane reaction product; or b) separate continuous or substantially continuous feeds of (i) a polymerizable vinylolefin, (iii) a metallocene optionally in an organic liquid solvent or diluent, and (iv) an aluminoxane optionally in an organic liquid solvent or diluent; or c) separate continuous or substantially continuous feeds of (i) and (ii) and at least one of (iii) and (iv). Particles of catalytically-active, prepolymerized, self-supported olefin polymerization catalyst composition are formed in the reaction medium. The metallocene used as the feed or in making up the feed has at least one polymerizable olefinic substituent in the molecule.
    • 该方法同时进料到预聚合反应混合物的液相中。 这些进料是:a)分离的连续或基本上连续的进料,其中(i)可聚合的含氟烯烃,和(ii)金属茂和铝氧烷和/或茂金属 - 铝氧烷反应产物的有机液体溶剂中的溶液; (i)可聚合的烯烃,(iii)任选在有机液体溶剂或稀释剂中的茂金属,和(iv)任选在有机液体溶剂或稀释剂中的铝氧烷的连续或基本上连续的进料; (i)和(ii)和(iii)和(iv)中的至少一种的单独的连续或基本上连续的进料。在反应介质中形成催化活性的,预聚合的,自负载的烯烃聚合催化剂组合物的颗粒 。 用作原料或用于补充原料的茂金属在分子中具有至少一个可聚合的烯属取代基。