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    Resin composition having excellent paint coatability
    15.
    发明公开
    Resin composition having excellent paint coatability 失效
    Harstusammensetzung mit exzellenter Farbbeschichtbarkeit

    公开(公告)号：EP0714948A1

    公开(公告)日：1996-06-05

    申请号：EP96200197.0

    申请日：1993-04-01

    申请人： Tonen Chemical Corporation ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： Saito, Yoshiharu ,  Sakaizawa, Masao ,  Iwanami, Kunio ,  Kitano, Kitsusho ,  Tasaka, Michihisa ,  Kawazu, Kenji ,  Miyazaki, Shizuo ,  Nomura, Takao ,  Nishio, Takeyoshi ,  Iwai, Hisayuki

    IPC分类号： C08L53/00 ,  C08K3/34

    CPC分类号： C08L53/00 ,  C08K3/013 ,  C08K3/34 ,  C08L23/06 ,  C08L23/0815 ,  C08L23/10 ,  C08L23/16 ,  C08L2666/24 ,  C08L2666/04

    摘要： A resin composition having excellent paint coatability comprising:

    (A) 50-80 weight % of a multi-stage polymerized propylene-ethylene block copolymer consisting essentially of (i) a propylene homopolymer portion, (ii) a propylene-ethylene random copolymer portion, and (iii) an ethylene homopolymer portion, said propylene-ethylene block copolymer being characterized by the requirement that:

    (a) said propylene-ethylene random copolymer portion (ii) has a number-average molecular weight of 20 X 40 4 or more and a weight-average molecular weight of 60 X 10 4 or more;
    (b) a content of ethylene is 60 weight % or more and a content of said ethylene homopolymer portion (iii) is 40 weight % or more, both based on the total amount (100 weight %) of said propylene-ethylene random copolymer portion (ii) and said ethylene homopolymer portion (iii); or
    (c) an intrinsic viscosity of said propylene homopolymer portion (i) is 0.9-1.2 dl/g, an intrinsic viscosity of said propylene-ethylene random copolymer portion (ii) is 4.0 dl/g or more, and an ethylene content of said propylene-ethylene random copolymer portion (ii) is 30-70 weight %;

    (B) 20-40 weight % of an ethylene-α-olefin copolymer elastomer; and
    (C) up to 20 weight % of an inorganic filler.

    摘要翻译： 具有优异的涂漆性的树脂组合物，其包含：（A）50-80重量％的多阶段聚合的丙烯 - 乙烯嵌段共聚物，其基本上由（i）丙烯均聚物部分，（ii）丙烯 - 乙烯无规共聚物部分， 所述丙烯 - 乙烯嵌段共聚物的特征在于：（a）所述丙烯 - 乙烯无规共聚物部分（ii）的数均分子量为20×40 4或 更多且重均分子量为60×10 4或更大; （b）基于所述丙烯 - 乙烯无规共聚物部分的总量（100重量％），乙烯的含量为60重量％以上，所述乙烯均聚物部分（iii）的含量为40重量％以上 （ii）和所述乙烯均聚物部分（iii）; 或（c）所述丙烯均聚物部分（i）的特性粘度为0.9-1.2dl / g，所述丙烯 - 乙烯无规共聚物部分（ii）的特性粘度为4.0dl / g以上，乙烯含量 所述丙烯 - 乙烯无规共聚物部分（ii）为30-70重量％ （B）20-40重量％的乙烯-α-烯烃共聚物弹性体; 和（C）至多20重量％的无机填料。 乐

    Polypropylene resin composition for motorcar-trimming materials
    16.
    发明公开
    Polypropylene resin composition for motorcar-trimming materials 失效
    Polypropylen-HarzzusammensetzungfürKraftfahrzeugausstattungsteile。

    公开(公告)号：EP0669372A1

    公开(公告)日：1995-08-30

    申请号：EP95301245.7

    申请日：1995-02-27

    申请人： MITSUI TOATSU CHEMICALS, Inc. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： Sugihara, Eiichi ,  Yokote, Sachio ,  Nishio, Takeyoshi ,  Nomura, Takao

    IPC分类号： C08L53/00

    CPC分类号： C08L53/00

    摘要： A polypropylene resin composition for use as a motorcar-trimming material comprises 95 to 85% by weight of an ethylene-propylene block copolymer (A) whose ethylene-propylene copolymer part has an average intrinsic viscosity ([η]) ranging from 7 to 12 g/dl and 5 to 15% by weight of an inorganic filler (B) having an average particle size ranging from 1 to 4µm, wherein the composition has a melt index (MI) in the range of from 15 to 40 g/10 min, a flexural modulus (FM) ranging from 2300 to 3000 MPa and a low-temperature brittle point (LB) of less than 30°C and wherein the values FM and LB of the composition satisfy the following inequality: FH > 8.4 × LB + 2300. The polypropylene resin composition is excellent in the balance between rigidity and low-temperature brittle point and in flowability.

    摘要翻译： 用作汽车修整材料的聚丙烯树脂组合物包含95-85重量％的乙烯 - 丙烯嵌段共聚物（A），其乙烯 - 丙烯共聚物部分的平均特性粘度（η）为7-12 g / dl和5〜15重量％的平均粒度为1〜4μm的无机填料（B），其中组合物的熔体指数（MI）为15〜40g / 10分钟，弯曲模量（FM）为2300-3000MPa，低温脆性点（LB）小于30℃，其中组合物的FM和LB满足以下不等式：FH> 8.4× LB + 2300.聚丙烯树脂组合物的刚性与低温脆性和流动性之间的平衡优异。