公开(公告)号：US20160083561A1

公开(公告)日：2016-03-24

申请号：US14785558

申请日：2014-03-12

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： Monica Galvan ,  Andreas Mann ,  Tiziana Caputo ,  Antonio Mazzucco ,  Giampaolo Pellegatti

IPC: C08K5/527 ,  C08F210/16

CPC classification number: C08K5/527 ,  C08F210/16 ,  C08K5/0083 ,  C08K5/098 ,  C08K5/1575 ,  C08F210/06 ,  C08F4/651 ,  C08L23/14

Abstract: A polyolefin composition, particularly fit for the production of extrusion blow molded articles, comprising (a) a propylene-ethylene copolymer having a content of units deriving from ethylene of 4.0% by weight or higher, and (b) a nucleating agent and having a crystallization temperature (Tc) higher than 117° C. can be obtained by copolymerizing propylene and ethylene in the presence of a catalyst system obtained by contacting a solid catalyst component comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and at least two electron donor compounds one of which being present in an amount from 40 to 90% by mol with respect to the total amount of donors and selected from succinates and the other selected from 1,3 diethers, an aluminum hydrocarbyl compound, and optionally an external electron donor compound.

Abstract translation: 一种聚烯烃组合物，特别适用于生产挤出吹塑制品，其包含（a）乙烯衍生物的含量为4.0重量％以上的丙烯 - 乙烯共聚物，和（b）成核剂并具有 在通过使包含卤化镁的固体催化剂组分，至少具有Ti-卤素键的钛化合物和 至少两种电子给体化合物，其中一种以相对于供体总量为40至90摩尔％的量存在，并且选自琥珀酸盐，另一种选自1,3-二醚，铝烃基化合物和任选的 外电子给体化合物。