Production of ultra high melt flow polypropylene resins
    11.
    发明公开
    Production of ultra high melt flow polypropylene resins 审中-公开
    Herstellung von Polypropylenharzen mit ultraherher Schmelzflussrate

    公开(公告)号:EP1223181A2

    公开(公告)日:2002-07-17

    申请号:EP02075076.6

    申请日:2002-01-14

    IPC分类号: C08F110/06 C08F4/651

    摘要: 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.

    摘要翻译: 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。 该方法利用含醚内酯的齐格勒 - 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。

    Improved electron donor and catalyst system for monomer polymerization
    12.
    发明公开
    Improved electron donor and catalyst system for monomer polymerization 失效
    Verbesserte Electronen-Donor und Katalysatorsystemfürdie Polymerisation von Monomeren

    公开(公告)号:EP0860452A1

    公开(公告)日:1998-08-26

    申请号:EP98103104.0

    申请日:1998-02-23

    IPC分类号: C08F10/00 C08F4/646

    摘要: Provided is process of polymerizing monomer having at least one Ziegler-Natta polymerizable bond, comprising contacting monomer with, reacting monomer in presence of, or combinations thereof, catalyst system comprising:

    A) catalyst component consisting essentially of

    i) about 1.5 weight % to about 6 weight % titanium,
    ii) about 10 weight % to about 20 weight % magnesium,
    iii) about 40 weight % to about 70 weight % halogen,
    iv) about 5 weight % to about 25 weight % polycarboxylic ester selected from the group consisting of esters aliphatic, aromatic, alicyclic polycarboxylic acids, or combinations thereof or alkyl phthalates, and
    v) about 0.1 weight percent to about 2.5 weight % organic phosphorous compound selected from the group consisting of hydrocarbon esters of phosphoric acid such that each hydrocarbon group has one to about six carbon atoms;

    B) electron donor described by the formula:
    wherein R 1 is alkyl or cycloakylgroup containing at least one secondary or tertiary carbon atom, R 2 and R 3 are each independently alkyl or aryl group, and R 4 is an alkyl group having a primary carbon bonded to the silicon atom; and
    C) organic aluminum compound.

    摘要翻译: 提供了具有至少一种齐格勒 - 纳塔可聚合键的单体的聚合方法,其包括使单体与单体在其存在下或其组合下反应的催化剂体系接触,所述催化剂体系包含:A)基本上由i)约1.5重量%至约 6重量%的钛,ii)约10重量%至约20重量%的镁,iii)约40重量%至约70重量%的卤素,iv)约5重量%至约25重量%的多元羧酸酯, 酯脂族,芳族,脂环族多元羧酸或其组合或邻苯二甲酸烷基酯,以及v)约0.1重量%至约2.5重量%的有机磷化合物,其选自磷酸的烃酯,使得每个烃基具有1至 约6个碳原子; B)由下式表示的电子给体:其中R1是含有至少一个仲或叔碳原子的烷基或环烷基,R2和R3各自独立地是烷基或芳基,R4是具有伯碳键的烷基 硅原子; 和C)有机铝化合物。 CH