Resin composition having excellent paint coatability
    2.
    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

    IPC分类号: C08L53/00 C08K3/34

    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