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26 条记录 (耗时 0.03 秒)

    Polymerization catalyst system using n-butymethyldimethoxysilane for preparation of polypropylene film grade resins
    21.
    发明授权
    Polymerization catalyst system using n-butymethyldimethoxysilane for preparation of polypropylene film grade resins 失效
    使用正丁基二甲氧基硅烷制备聚丙烯薄膜级树脂的聚合催化剂体系

    公开(公告)号：US07109143B2

    公开(公告)日：2006-09-19

    申请号：US10659414

    申请日：2003-09-10

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

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

    IPC分类号： B01J31/02

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

    摘要： 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 (G′) 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.

    摘要翻译： 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。

    Boron alkyl as co-catalyst to improve polymerization yield and control polydispersity
    25.
    发明授权
    Boron alkyl as co-catalyst to improve polymerization yield and control polydispersity 失效
    硼烷基作为助催化剂以提高聚合产率并控制多分散性

    公开(公告)号：US5330947A

    公开(公告)日：1994-07-19

    申请号：US776154

    申请日：1991-10-15

    申请人： Edwar S. Shamshoum ,  David J. Rauscher ,  Shabbir A. Malbari

    发明人： Edwar S. Shamshoum ,  David J. Rauscher ,  Shabbir A. Malbari

    IPC分类号： C08F4/649 ,  C08F10/00

    CPC分类号： C08F10/00

    摘要： This invention relates to a catalyst system using a boron alkyl in combination with an aluminum alkyl as a co-catalyst, a process for making the catalyst system and a process using the catalyst system for polymerization of olefins, especially .alpha.-olefins, such as propylene. While both boron alkyls and aluminum alkyls are known as co-catalysts separately, use of a boron alkyl with an aluminum alkyl as co-catalysts in olefin polymerization resulted in an unexpected increase in polymer yield. An increase in yield is accomplished without any increase in the amount of aluminum residue in the polymer product. The preferred boron alkyl is triethyl boron. The preferred aluminum alkyl is TEAl.

    摘要翻译： 本发明涉及一种使用烷基烷基与烷基铝作为助催化剂的催化剂体系，制备催化剂体系的方法以及使用催化剂体系聚合烯烃，特别是α-烯烃如丙烯的方法 。 尽管分别将烷基烷基铝和烷基铝分别称为助催化剂，但是在烷基聚合中使用烷基铝和烷基铝作为助催化剂，导致聚合物产率的突然增加。 在聚合物产品中铝残留量的增加没有任何增加的情况下，产量的增加。 优选的烷基硼是三乙基硼。 优选的烷基铝是TEAl。

    Diethylaluminum alkoxide/aluminum alkyl co-catalyst for improved polymerization yield
    26.
    发明授权
    Diethylaluminum alkoxide/aluminum alkyl co-catalyst for improved polymerization yield 失效
    二乙基烷氧基铝/烷基铝催化剂，提高聚合产率

    公开(公告)号：US5254517A

    公开(公告)日：1993-10-19

    申请号：US776498

    申请日：1991-10-11

    申请人： Edwar S. Shamsoum ,  David J. Rauscher ,  Shabbir Malbari

    发明人： Edwar S. Shamsoum ,  David J. Rauscher ,  Shabbir Malbari

    IPC分类号： C08F4/642 ,  C08F10/00

    CPC分类号： C08F10/00

    摘要： This invention relates to a catalyst system using a diethylaluminum alkoxide-aluminum alkyl cocatalyst and to a process for polymerization of olefins using the catalyst system. Use of this catalyst system increases polymerization yield. The diethylaluminum alkoxide is preferably diethylaluminum ethoxide and the aluminum alkyl is preferably triethyl aluminum. The mole-to-mole ratio of diethylaluminum alkoxide to aluminum alkyl ranges from 0.05 to 0.2. This invention is effective for the aluminum/transition metal ratio for the polymerization of olefins ranges from about 100 to about 500. Polymerization yield increases of greater than 10% are realized.

    摘要翻译： 本发明涉及使用二乙基烷氧基铝烷基助催化剂的催化剂体系和使用该催化剂体系的烯烃聚合方法。 该催化剂体系的使用增加了聚合产率。 二乙基铝醇盐优选为二乙基乙氧基铝，烷基铝优选为三乙基铝。 二烷基铝与烷基铝的摩尔比为0.05-0.2。 本发明对于烯烃聚合的铝/过渡金属比率在约100至约500范围内是有效的。实现了大于10％的聚合产率增加。