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    Propylene block copolymer and propylene resin composition
    1.
    发明授权
    Propylene block copolymer and propylene resin composition 有权
    丙烯嵌段共聚物和丙烯树脂组合物

    公开(公告)号：US06825280B1

    公开(公告)日：2004-11-30

    申请号：US09485189

    申请日：2000-02-07

    申请人： Yu Hayakawa ,  Tsuyoshi Ogasawara ,  Yuuji Fujita ,  Masao Sakaizawa ,  Kimiho Kosegaki ,  Toshihiko Sugano ,  Takao Tayano ,  Toru Suzuki ,  Yasuo Maruyama ,  Osamu Shibata ,  Takao Usami

    发明人： Yu Hayakawa ,  Tsuyoshi Ogasawara ,  Yuuji Fujita ,  Masao Sakaizawa ,  Kimiho Kosegaki ,  Toshihiko Sugano ,  Takao Tayano ,  Toru Suzuki ,  Yasuo Maruyama ,  Osamu Shibata ,  Takao Usami

    IPC分类号： C08L2310

    CPC分类号： C08L53/00 ,  C08F10/06 ,  C08F210/06 ,  C08F297/08 ,  C08K7/14 ,  C08L23/06 ,  C08L23/0815 ,  C08L23/10 ,  C08L23/16 ,  C08L51/06 ,  C08L2205/03 ,  C08L2314/02 ,  C08L2314/06 ,  C08L2666/06 ,  C08L2666/24 ,  C08L2666/02 ,  C08L2666/04 ,  C08F210/16 ,  C08F2500/12 ,  C08F2500/15 ,  C08F2500/03

    摘要： Disclosed are a propylene polymer composition possessing excellent balance among rigidity and low warpage, resistance to deterioration caused by thermal oxidation during processing, weathering resistance, antistatic properties, and low bleeding properties, and a propylene resin composition which can easily produce molded products having excellent balance between rigidity and impact resistance (particularly low-temperature impact resistance) or heat resistance. The propylene polymer composition and the propylene resin composition comprise a propylene block copolymer consisting essentially of the following blocks (a) and (b) and having a melt flow rate of 0.1 to 200 g/10 min: block (a): a polymer block of a homopolymer of propylene or a random copolymer of propylene with a comonomer selected from the group consisting of ethylene and C4-C20 &agr;-olefins, the content of the comonomer being not more than 10% by mole; and block (b): a polymer block of a random copolymer of propylene with at least one comonomer selected from the group consisting of ethylene and C4-C20 &agr;-olefins, the content of the comonomer being 10 to 80% by mole, the average chain length of the comonomer block and the gross average chain length of the comonomer having a relationship represented by formula (I) nb≦n+1.5  (I) wherein nb represents the average chain length of the comonomer block; and n represents the gross average chain length of the comonomer.

    摘要翻译： 公开了在刚性和低翘曲之间具有优异的平衡性，耐加工中的热氧化，耐候性，抗静电性和低渗透性的耐劣化性的丙烯聚合物组合物，以及可以容易地制备具有优异平衡性的模塑产品的丙烯树脂组合物 刚性和抗冲击性（特别是低温耐冲击性）或耐热性。 丙烯聚合物组合物和丙烯树脂组合物包含基本上由以下嵌段（a）和（b）组成并且熔体流动速率为0.1至200g / 10min的丙烯嵌段共聚物：嵌段（a）：聚合物嵌段 的丙烯均聚物或丙烯与选自乙烯和C 4 -C 20α-烯烃的共聚单体的无规共聚物，共聚单体的含量不超过10摩尔％ 和嵌段（b）：丙烯与至少一种选自乙烯和C 4 -C 20α-烯烃的共聚单体的无规共聚物的聚合物嵌段，共聚单体的含量为10〜80摩尔％，平均链 共聚单体嵌段的长度和由式（I）表示的关系的共聚单体的总平均链长，其中nb表示共聚单体嵌段的平均链长; n表示共聚单体的总平均链长。