公开(公告)号：US20140235802A1

公开(公告)日：2014-08-21

申请号：US14346648

申请日：2012-09-17

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： Monica Galvan ,  Roberto Pantaleoni ,  Ofelia Fusco ,  Benedetta Gaddi ,  Andreas Neumann ,  Antonio Mazzucco ,  Gianni Collina ,  Gabriella Sartori

IPC: C08F10/06

CPC classification number: C08F10/06 ,  B01J31/0204 ,  B01J31/0209 ,  C08J5/18 ,  C08J2323/14 ,  C08F4/651 ,  C08F4/6543 ,  C08F110/06 ,  C08F2500/04 ,  C08F2500/12 ,  C08F2500/15

Abstract: 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.

Abstract translation: 一种制备高纯度丙烯聚合物的方法，该催化剂包括通过使（a）包含Mg，Ti和至少第一内电子给体化合物（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部电子给体化合物（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，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。