PROCESS FOR THE PREPARATION OF HIGH PURITY PROPYLENE POLYMERS
    42.
    发明公开
    PROCESS FOR THE PREPARATION OF HIGH PURITY PROPYLENE POLYMERS 有权
    VERFAHRENFÜRDIE HERSTELLUNG VON HOCHREINEN PROPYLENPOLYMEREN

    公开(公告)号:EP2758440A1

    公开(公告)日:2014-07-30

    申请号:EP12759441.4

    申请日:2012-09-17

    摘要: A process for the preparation of high purity propylene polymers carried out in the presence of a catalyst comprising the product obtained by contacting: (a) a solid catalyst component comprising Mg, Ti and at least a first internal electron donor compound (HD) selected among the succinates and a second internal electron donor compound (2ID) selected among the 1,3-diethers, wherein the molar ratio of first internal donor over second internal donor 1ID:2ID is comprised between 4:6 and 9:1, with (b) an organo-aluminium compound, and optionally with (c) an external electron donor compound, said process being carried out at a temperature equal or higher than 78° C. and by employing a molar ratio of organo-aluminum compound over solid catalyst component (b):(a) of lower than 5.

    摘要翻译: 一种制备高纯度丙烯聚合物的方法,所述丙烯聚合物在催化剂存在下进行,所述催化剂包括通过使(a)包含Mg,Ti和至少第一内部电子给体化合物(HD)的固体催化剂组分与 所述琥珀酸盐和选自所述1,3-二醚中的第二内给电子体化合物(2ID),其中所述第一内给体相对于所述第二内供体1ID:2ID的摩尔比为4:6至9:1,与(b )有机铝化合物,并且任选地与(c)外电子给体化合物反应,所述方法在等于或高于78℃的温度下进行,并且通过使用有机铝化合物与固体催化剂组分的摩尔比 (b):( a)低于5。