公开(公告)号：US20040116629A1

公开(公告)日：2004-06-17

申请号：US10659125

申请日：2003-09-10

Applicant: Fina Technology Inc.

Inventor： Kenneth Paul Blackmon ,  Luis Paulo Barthel-Rosa ,  Shabbir Ahmedbhai Malbari ,  David J. Rauscher ,  Michel M. Daumerie

IPC: C08F004/44

CPC classification number: C08F10/00 ,  C08F110/06 ,  C08F4/651 ,  C08F2/38 ,  C08F2500/12 ,  C08F2500/04

Abstract: A method of preparing ultra high melt flow polypropylene having reduced xylene solubles is provided. The method utilizes a diether internal donor-containing Ziegler-Natta catalyst system to polymerize propylene. The polypropylene produced is characterized by having a melt flow of at least about 300 g/10 min and a xylene solubles of not more than about 3.5% and no peroxide residue. The catalyst system may also include an internal phthalate donor. The method of the invention allows the amount of external donors to be reduced, or even eliminated, without significant increases in xylene solubles.

Abstract translation: 提供了制备具有降低的二甲苯可溶物的超高熔体流动聚丙烯的方法。 该方法利用含二醚内供体的齐格勒 - 纳塔催化剂体系来聚合丙烯。 所生产的聚丙烯的特征在于具有至少约300g / 10min的熔体流动速率和不超过约3.5％的二甲苯可溶物并且不含过氧化物残余物。 催化剂体系还可以包括邻苯二甲酸酯供体。 本发明的方法允许外部供体的量减少甚至消除，而二甲苯可溶物的显着增加。