公开(公告)号：US20040048991A1

公开(公告)日：2004-03-11

申请号：US10659414

申请日：2003-09-10

Applicant: Fina Technology, Inc.

Inventor： Kenneth Paul Blackmon ,  David J. Rauscher ,  Michael Ray Wallace

IPC: C08F004/44 ,  B01J031/00

CPC classification number: C08F4/6465 ,  B01J31/0212 ,  B01J2231/12 ,  C08F110/06 ,  Y02P20/52 ,  C08F2500/15 ,  C08F2500/26

Abstract: It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties. The catalyst systems of the invention provide for controlled chain defects/defect distribution and thus a regulated microtacticity. Consequently, the curve of storage modulus (Gnull) v. temperature is shifted such that the film achieves the same storage modulus at a lower temperature enabling faster throughput of polypropylene film through a high-speed tenter.

Abstract translation: 已经发现，使用正丁基甲基二甲氧基硅烷（BMDS）作为齐格勒 - 纳塔催化剂的外部电子给体可提供可制备具有改进性能的聚丙烯膜的催化剂体系。 本发明的催化剂体系提供受控的链缺陷/缺陷分布，从而提供调节的微量活性。 因此，储能模量（G'）v温度的曲线偏移，使得薄膜在较低温度下实现相同的储能模量，从而能够通过高速拉幅机获得更高的聚丙烯薄膜的生产量。

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。