Process for the preparation of polypropylene-b-poly(ethylene-co-propylene)
    1.
    发明授权
    Process for the preparation of polypropylene-b-poly(ethylene-co-propylene) 失效
    制备聚丙烯-b-聚(乙烯 - 共 - 丙烯)的方法

    公开(公告)号:US06657020B1

    公开(公告)日:2003-12-02

    申请号:US09554762

    申请日:2000-07-20

    IPC分类号: C08F201

    摘要: A process for preparing polypropylene-b-poly(ethylene-co-propylene) by the use of a tubular continuous polymerizer in the presence of an olefin-polymerizing catalyst comprising a solid catalyst component (1) composed of titanium and halogen; an organosilicon compound (2); and, if necessary, at least one electron-donating compound (3) selected from the group consisting of organosilicon compounds represented by the general formula: RnSi(OR′)4−n (wherein R and R′ are each independently a C1-C10 hydrocarbon group; and n is an integer of 1 to 3) and nitrogenous heterocyclic compounds, wherein the solid catalyst component (1) is preliminarily brought into contact with the organosilicon compound (2) in the presence of the electron-donating compound (3), and then a polypropylene segment is formed through polymerization, followed by formation of a poly(ethylene-co-propylene) segment at the end of the polypropylene segment through polymerization. The process enables efficient preparation of the polymer with a reduced content of inorganic contaminants, even when the polymer is one having a weight-average molecular weight of as high as 100,000 or more.

    摘要翻译: 在包含由钛和卤素组成的固体催化剂组分(1)的烯烃聚合催化剂存在下,通过使用管状连续聚合反应器制备聚丙烯-b-聚(乙烯 - 共 - 丙烯)的方法; 有机硅化合物(2); 和(如果需要)至少一种供体化合物(3),其选自由通式RnSi(OR')4-n表示的有机硅化合物(其中R和R'各自独立地为C1-C10 烃基,n为1〜3的整数)和含氮杂环化合物,其中固体催化剂组分(1)在电子给予化合物(3)的存在下预先与有机硅化合物(2)接触, ,然后通过聚合形成聚丙烯链段,随后通过聚合在聚丙烯部分的末端形成聚(乙烯 - 共 - 丙烯)链段。 该方法即使当聚合物的重均分子量高达100,000或更高时,即可有效地制备具有降低的无机污染物含量的聚合物。

    Propylene-ethylene block copolymer compositions and processes for production thereof
    4.
    发明授权
    Propylene-ethylene block copolymer compositions and processes for production thereof 失效
    丙烯 - 乙烯嵌段共聚物组合物及其制备方法

    公开(公告)号:US06355725B2

    公开(公告)日:2002-03-12

    申请号:US09764384

    申请日:2001-01-19

    IPC分类号: C08L2314

    摘要: A propylene-ethylene block copolymer composition is disclosed which comprises 0.01 to 10% by weight of an A-B type propylene-ethylene block copolymer (C) consisting essentially of a polypropylene segment (A) and an ethylene-propylene random copolymer segment (B), and 99.99 to 90% by weight of a propylene polymer (D), wherein the A-B type propylene-ethylene block copolymer (C) comprises 5 to 80% by weight of the ethylene-propylene random copolymer segment (B) having an ethylene content of 10 to 90% by weight and the propylene polymer (D) comprises 60 to 95% by weight of a homopolymer of propylene or a copolymer of propylene containing a copolymerizable monomer therewith (D1) and 40 to 5% by weight of an ethylene-propylene random copolymer (D2).

    摘要翻译: 公开了一种丙烯 - 乙烯嵌段共聚物组合物,其包含0.01至10重量%的基本上由聚丙烯链段(A)和乙烯 - 丙烯无规共聚物链段(B)组成的AB型丙烯 - 乙烯嵌段共聚物(C) 和99.99至90重量%的丙烯聚合物(D),其中AB型丙烯 - 乙烯嵌段共聚物(C)包含5-80重量%的乙烯含量的乙烯 - 丙烯无规共聚物链段(B) 为10〜90重量%,丙烯聚合物(D)为60〜95重量%的丙烯均聚物或含共聚单体的丙烯共聚物(D1)和40〜5重量%的乙烯 - 丙烯无规共聚物(D2)。

    Propylene-ethylene block copolymer compositions and processes for production thereof
    5.
    发明授权
    Propylene-ethylene block copolymer compositions and processes for production thereof 失效
    丙烯 - 乙烯嵌段共聚物组合物及其制备方法

    公开(公告)号:US06211300B1

    公开(公告)日:2001-04-03

    申请号:US09058302

    申请日:1998-04-10

    IPC分类号: C08L2314

    摘要: A propylene-ethylene block copolymer composition is disclosed which comprises 0.01 to 10% by weight of an A-B type propylene-ethylene block copolymer (C) consisting essentially of a polypropylene segment (A) and an ethylene-propylene random copolymer segment (B), and 99.99 to 90% by weight of a propylene polymer (D), wherein the A-B type propylene-ethylene block copolymer (C) comprises 5 to 80% by weight of the ethylene-propylene random copolymer segment (B) having an ethylene content of 10 to 90% by weight and the propylene polymer (D) comprises 60 to 95% by weight of a homopolymer of propylene or a copolymer of propylene containing a copolymerizable monomer therewith (D1) and 40 to 5% by weight of an ethylene-propylene random copolymer (D2).

    摘要翻译: 公开了一种丙烯 - 乙烯嵌段共聚物组合物,其包含0.01至10重量%的基本上由聚丙烯链段(A)和乙烯 - 丙烯无规共聚物链段(B)组成的AB型丙烯 - 乙烯嵌段共聚物(C) 和99.99〜90重量%的丙烯聚合物(D),其中AB型丙烯 - 乙烯嵌段共聚物(C)含有5-80重量%的乙烯 - 丙烯无规共聚物链段(B),乙烯含量为 10至90重量%,丙烯聚合物(D)包含60至95重量%的丙烯均聚物或含可共聚单体的丙烯共聚物(D1)和40至5重量%的乙烯 - 丙烯 无规共聚物(D2)。

    Catalysts for polymerization of olefins
    6.
    发明授权
    Catalysts for polymerization of olefins 失效
    用于烯烃聚合的催化剂

    公开(公告)号:US5084429A

    公开(公告)日:1992-01-28

    申请号:US563613

    申请日:1990-08-07

    CPC分类号: C08F10/00

    摘要: A catalyst for use in polymerization of olefins which comprises a carrier mainly composed of a magnesium compound precipitated from a solution and a catalytic component supported on the carrier and selected from titanium halides, vanadyl halides and vanadium halides is described. The catalyst is obtained by a process which comprises: (A) mixing (a) at least one magnesium compound with (c) a saturated or unsaturated monohydric or polyhydric alcohol for reaction in dissolved state in the presence of (b) carbon dioxide in an inert hydrocarbon solvent to obtain component (A); (B) subjecting the component (A) to mixing and reaction with (d) a titanium and/or a vanadyl halide and/or a vanadium halide of the general formula, VX.sub.r (OR.sup.8).sub.4-r, and also with (e) at least one boron compound, Si compound and/or Siloxane compound thereby obtaining solid product (I); (C) reacting the solid product (I) with (f) a cyclic ether with or without R.sup.12 OH thereby causing dissolution and re-precipitation to obtain solid product (II); and (D) subjecting the solid product (II) to further reaction with (g) component (B) consisting of a titanium halide and/or a vanadyl halide and/or a vanadium halide, and/or a SiX.sub. s (OR.sup.9).sub.4-s, thereby obtaining solid product (III), followed either by further reaction with a mixture of the component (B) and (h) an electron donor or by reaction of (g) with the solid product (III) obtained by the reaction between the solid product (II) and (h) or (h) with (j) electron donor, thereby obtaining solid product (IV) for use as the catalytic component.

    Catalyst for olefin polymerization and process for producing same
    7.
    发明授权
    Catalyst for olefin polymerization and process for producing same 失效
    烯烃聚合催化剂及其制备方法

    公开(公告)号:US4652540A

    公开(公告)日:1987-03-24

    申请号:US819420

    申请日:1986-01-16

    CPC分类号: C08F10/00 Y10S526/904

    摘要: A highly active catalyst for olefin polymerization, which is resistant to catalyst poisons contained in olefins as polymerization raw material and according to which the percentage of amorphous polymer formed is small, is provided, which catalyst is obtained byreacting a reaction product (I) of an organoaluminum compound with an electron donor, with TiCl.sub.4,further reacting the resulting solid product (II) with an electron donor and an electron acceptor,mixing the resulting solid product (III) with an organoaluminum compound in an inert solvent,keeping the resulting catalyst dispersion at 0.degree. to 70.degree. C., andhaving a small amount of an .alpha.-olefin and an extremely small amount of carbonyl sulfide slowly absorbed in the dispersion kept as above, to thereby subject the dispersion to a preliminary polymerization.

    摘要翻译: 一种用于烯烃聚合的高活性催化剂,其对烯烃中作为聚合原料的催化剂毒物具有抗性,并且其中形成的无定形聚合物的百分比小,所述催化剂是通过使反应产物(I) 具有电子给体的有机铝化合物与TiCl 4进一步使所得固体产物(II)与电子给体和电子受体反应,将所得固体产物(III)与有机铝化合物在惰性溶剂中混合,保持所得催化剂 在0℃至70℃下分散,并且在如上所述保持的分散体中缓慢吸收少量的α-烯烃和极少量的羰基硫,从而使分散体进行预聚合。