Polymers of propene
    1.
    发明授权
    Polymers of propene 有权
    丙烯聚合物

    公开(公告)号:US06248829B1

    公开(公告)日:2001-06-19

    申请号:US09268721

    申请日:1999-03-17

    IPC分类号: C08F800

    摘要: Polymers of propene consist of from 50 to 99.9% by weight of an isotactic propene copolymer (A′) and from 0.1 to 50% by weight of a propene homopolymer or a propene copolymer (B′), where a) the propene copolymer (A′) consists of from 80 to 99.9 mol % of propene and from 0.1 to 20 mol % of ethene and/or a C4-C12-1-olefin, at least 80% of all propene diads are isotactic meso diads, the propene copolymer (A′) has a proportion (XS) of material soluble in xylene at 20° C. which satisfies the inequality (1) (XS) 1.9×10−11(TM)6.34+180 MPa  (2),  where in both inequalities (1) and (2) TM is the melting point in ° C., and b) the propene homopolymer or the propene copolymer (B′) consists of from 80 to 100 mol % of propene and from 0 to 20 mol % of ethene and/or a C4-C12-1-olefin, at least 55% of all regioregular propene diads are isotactic meso diads, an enthalpy of fusion &Dgr;Hm of less than 50 J/g is observed in the DSC measurement of (B′) and no crystalline ex sequences are detectable.

    摘要翻译: 丙烯的聚合物由50-99.9重量%的全同立构丙烯共聚物(A')和0.1-50重量%的丙烯均聚物或丙烯共聚物(B')组成,其中丙烯共聚物(A' )由80至99.9mol%的丙烯和0.1至20mol%的乙烯和/或C 4 -C 12 -1-烯烃组成,所有丙烯二单元的至少80%是全同立构的内消旋二元环,丙烯共聚物(A ')具有在20℃下可溶于二甲苯的材料的比例(XS),其满足不等式(1)丙烯共聚物(A')的拉伸弹性模量(E)(MPa)根据ISO 527测定 (2),其中在两个不等式(1)和(2)中,TM是以℃为单位的熔点,和b)丙烯均聚物或丙烯共聚物(B')由80-100mol% 丙烯和0至20摩尔%的乙烯和/或C 4 -C 12 -1-烯烃,至少55%的所有区域规则丙烯二单元均为全同立构的内消旋二聚体,熔融焓DELTAHm小于5 在(B')的DSC测量中观察到0J / g,并且不检测到结晶ex序列。

    Scratch resistant polymer compositions and articles
    4.
    发明授权
    Scratch resistant polymer compositions and articles 失效
    耐刮擦聚合物组合物和制品

    公开(公告)号:US5731376A

    公开(公告)日:1998-03-24

    申请号:US547552

    申请日:1995-10-24

    CPC分类号: C08L53/00

    摘要: Filled polymer compositions based on polypropylene block copolymer, particularly medium and medium to high impact grades, and a plate like filler such as talc, have improved visual scratch resistance by the inclusion of a polyorganosiloxane, particularly a polyalkylsiloxane such as polydimethylsiloxane. Silicone oils having viscosities of about 30,000 cSt are especially useful. Further benefits are obtained by the further inclusion of a fatty acid amide and/or by the use of passivated filler, particularly by the inclusion of an epoxy resin.

    摘要翻译: 基于聚丙烯嵌段共聚物,特别是中等至中等至高冲击等级的填充聚合物组合物和板状填料如滑石,通过包含聚有机硅氧烷,特别是聚烷基硅氧烷如聚二甲基硅氧烷,改善了目视耐刮擦性。 具有约30,000cSt粘度的硅油是特别有用的。 通过进一步包含脂肪酸酰胺和/或通过使用钝化填料,特别是通过包含环氧树脂获得进一步的益处。