Polymer blends
    39.
    发明授权
    Polymer blends 有权
    聚合物共混物

    公开(公告)号:US06191223B1

    公开(公告)日:2001-02-20

    申请号:US09336732

    申请日:1999-06-21

    IPC分类号: C08F800

    摘要: a) from 50 to 85% by weight of a copolymer of propylene (A) with 1-alkenes comprising from 20 to 80% by weight of a high molecular weight copolymer of propylene (I) containing from 2.0 to 7.0% by weight of copolymerized 1-alkene and having a viscosity of from 500 to 1200 ml/g and from 20 to 80% by weight of a low molecular weight copolymer of propylene (II) containing from 4.0 to 10.0% by weight of copolymerized 1-alkene and having a viscosity of from 200 to 450 ml/g, b) from 5 to 10% by weight of a polymer of ethylene (B) and c) from 10 to 40% by weight of a rubber-like copolymer of propylene and a 1-alkene (C) containing from 30 to 70% by weight of copolymerized 1-alkene have a melt flow index (MFI) at 230° C. under a weight of 5 kg of from 0.1 to 5 g/10 min, a molecular weight distribution (Mw/Mn) of from 6 to 20 and a total 1-alkene content of from 4 to 15% by weight.

    摘要翻译: a)50至85重量%的丙烯(A)与1-烯烃的共聚物,其包含20至80重量%的含有2.0至7.0重量%共聚合的丙烯(I)的高分子量共聚物 并且具有500至1200ml / g的粘度和20至80重量%的含有4.0至10.0重量%的共聚1-烯烃的丙烯(II)的低分子量共聚物,并且具有 粘度为200〜450ml / g,b)5〜10重量%的乙烯(B)和(c)的聚合物,c)10〜40重量%的丙烯与1-烯烃的橡胶状共聚物 C)含有30至70重量%的共聚1-烯烃,熔体流动指数(MFI)在230℃下以5kg的重量计0.1至5g / 10min,分子量分布(Mw / Mn)为6〜20,总1-烯烃含量为4〜15重量%。

    Polymer having long isotactic sequences and randomly-distributed
ethylene content obtained by polymerizing propylene in presence of
specific catalysts
    40.
    发明授权
    Polymer having long isotactic sequences and randomly-distributed ethylene content obtained by polymerizing propylene in presence of specific catalysts 失效
    在特定催化剂存在下通过聚合丙烯获得的具有长全同立构序列和无规分布的乙烯含量的聚合物

    公开(公告)号:US6048950A

    公开(公告)日:2000-04-11

    申请号:US987479

    申请日:1997-12-09

    摘要: Propylene isoblock polymers with 0.5 to 10 mol %, based on the total polymer, of randomly distributed ethylene content and with a narrow molecular weight distribution and rubber-like properties are obtained when propylene is polymerized using a catalyst comprising an aluminoxane and a chiral metallocene, containing bridges, of formula I: ##STR1## in which M.sup.1 is preferably hafnium or zirconium,R.sup.1 and R.sup.2 are preferably halogen (e.g. C1) atoms,R.sub.3 through R.sup.6 are hydrogen or C.sub.1 -C.sub.10 -alkyl, and pair of adjacent radicals R.sup.3, R.sup.4, R.sup.5, and R.sup.6 can form an aromatic ring with the C-atoms to which they are bonded, andR.sup.7 is preferably --Si(CH.sub.3).sub.2 --Si(CH.sub.3).sub.2 --.

    摘要翻译: 当使用包含铝氧烷和手性茂金属的催化剂聚合丙烯时,获得基于总聚合物的0.5至10摩尔%的随机分布的乙烯含量并具有窄分子量分布和橡胶状性质的丙烯异嵌段聚合物, 其中M1优选为铪或锆,R 1和R 2优选为卤素(例如C 1)原子,R 3至R 6为氢或C 1 -C 10 - 烷基,以及一对相邻基团R 3,R 4,R 5 ,R6可以与它们所键合的C原子形成芳环,并且R 7优选为-Si(CH 3)2 -Si(CH 3)2 - 。