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    • 1. 发明授权
    • Olefin polymerization catalyst
    • 烯烃聚合催化剂
    • US4525468A
    • 1985-06-25
    • US489687
    • 1983-04-28
    • Mark P. MackMark L. Shannon
    • Mark P. MackMark L. Shannon
    • C08F4/64C08F10/00
    • C08F10/00
    • High activity catalysts for the polymerization of ethylene and other .alpha.-olefins are made by contacting a soluble magnesium compound of the general formula Mg(OSiR.sup.1 R.sup.2 R.sup.3).sub.2, wherein each of R.sup.1, R.sup.2, and R.sup.3 is, independently, alkyl, alkoxy or aryl with a metal alkoxide, or a mixture of a titanium tetraalkoxide with an alkoxide of another transition metal, in a saturated aliphatic hydrocarbon solution, followed by chlorination and precipitation by a suitable chlorinating agent. These catalysts show high activity for the polymerization of ethylene, especially under slurry polymerization conditions.
    • 通过使通式Mg(OSiR1R2R3)2的可溶性镁化合物与其中R1,R2和R3各自独立地为烷基,烷氧基或芳基与通式Mg(OSiR 2 R 3)2的可溶性镁化合物接触而制备用于乙烯和其它α-烯烃聚合的高活性催化剂, 金属醇盐或四烷氧基钛与另一过渡金属的醇盐的混合物,在饱和脂族烃溶液中,然后氯化并通过合适的氯化剂沉淀。 这些催化剂对于乙烯的聚合显示出高的活性,特别是在淤浆聚合条件下。