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    • 10. 发明公开
    • PROCESS FOR PRODUCING POLYPROPYLENE
    • 生产聚丙烯的方法
    • EP3237466A1
    • 2017-11-01
    • EP15817299.9
    • 2015-12-21
    • Borealis AG
    • LESKINEN, PauliLILJA, JohannaWANG, JingboGAHLEITNER, MarkusHORILL, ThomasDENIFL, PeterTRANNINGER, Cornelia
    • C08F110/06C08F4/651
    • C08F110/06C08F2/001C08F4/6465C08F4/6492C08F4/6546C08F2500/04C08F2500/12C08F2500/15C08F4/651C08F2500/17
    • Propylene is polymerised in the presence of a polymerisation catalyst comprising a solid catalyst component, an organoaluminium compound and an external electron donor, the process comprising the steps of (i) contacting propylene and hydrogen with the polymerisation catalyst in polymerisation conditions in a polymerisation reactor to produce a polymer of propylene; (ii) recovering the polymer of propylene from the polymerisation reactor; wherein the polymer of propylene has MFR of from more than 100 to 10000g/10 min. The solid catalyst component comprises titanium, magnesium, halogen and an internal electron donor, characterised in that the internal electron donor is a compound according to formula (I) with R1 and R2 being the same or different and being a linear or branched C1-C12-alkyl group, and with R being H or a linear, branched or cyclic C1 to C12-alkyl, whereby it is preferred that R is not H. The external electron donor is a silane compound having the formula Si(OR11)nR10 4-n, wherein each R10 is independently a linear or branched C1-C4 alkyl, preferably methyl or ethyl; and each R10 is independently a linear or branched alkyl group having from 1 to 24 and optionally containing an atom of group 15 of periodic table of elements or comprises a cyclic group having from 6 to 12 carbon atoms.
    • 丙烯在包含固体催化剂组分,有机铝化合物和外部电子给体的聚合催化剂存在下聚合,所述方法包括以下步骤:(i)使丙烯和氢气与聚合催化剂在聚合反应条件下在聚合反应器中接触至 产生丙烯的聚合物; (ii)从聚合反应器回收丙烯聚合物; 其中丙烯聚合物的MFR为大于100-10000g / 10min。 所述固体催化剂组分包含钛,镁,卤素和内电子给体,其特征在于所述内电子给体是根据式(I)的化合物,其中R 1和R 2相同或不同并且是直链或支链C 1-C 12 - 烷基,并且其中R为H或直链,支链或环状C 1至C 12 - 烷基,其中优选R不为H.外电子给体为具有式Si (OR 11)n R 10 4-n,其中每个R 10独立地为直链或支链C 1 -C 4烷基,优选甲基或乙基; 并且每个R 10独立地为具有1-24且任选含有元素周期表第15族原子的直链或支链烷基或包含具有6-12个碳原子的环状基团。