Preparation process for polypropylene-base resin compositions
    1.
    发明授权
    Preparation process for polypropylene-base resin compositions 失效
    聚丙烯基树脂组合物的制备方法

    公开(公告)号:US4626565A

    公开(公告)日:1986-12-02

    申请号:US722013

    申请日:1985-03-29

    CPC分类号: C08K3/0033 C08L53/00

    摘要: Disclosed herein is a preparation process for polypropylene-base resin compositions, which process comprises heating at a temperature of 170.degree.-280.degree. C. a mixture containing a crystalline ethylenepropylene block copolymer having a specific composition, an ethylene-propylene copolymer rubber having a specific composition and viscosity, an inorganic filler having a specific particle size, and an organic peroxide, all in specified amounts. The thus-obtained polypropylene-base resin compositions are suitable for use in the production of large moldings such as automobile bumpers, fenders and body sidemembers because of their excellent low-temperature impact resistance, high molding fluidity, good paintability and high stiffness as well as their low preparation cost.

    摘要翻译: PCT No.PCT / JP84 / 00403 Sec。 371日期:1985年3月29日 102(e)1985年3月29日PCT PCT。1984年8月17日。本文公开了一种聚丙烯基树脂组合物的制备方法,该方法包括在170-280℃的温度下加热含有 具有特定组成的结晶乙烯丙烯嵌段共聚物,具有特定组成和粘度的乙烯 - 丙烯共聚物橡胶,具有特定粒度的无机填料和有机过氧化物,均为规定量。 由此获得的聚丙烯基树脂组合物由于其优异的耐低温冲击性,高成型流动性,良好的可涂饰性和高刚性以及适用于制造汽车保险杠,挡泥板和车体组件等大型模制品而适用。 他们的准备费用很低。

    Polypropylene-base resin composition
    2.
    发明授权
    Polypropylene-base resin composition 失效
    聚丙烯基树脂组合物

    公开(公告)号:US4705818A

    公开(公告)日:1987-11-10

    申请号:US845506

    申请日:1986-03-28

    CPC分类号: C08K3/0033 C08L53/00

    摘要: Disclosed herein is a polypropylene-base resin composition obtained by heating at a temperature of 170.degree. C.-280.degree. C. a mixture containing a crystalline ethylene-propylene block copolymer having a specific composition, an ethylene-propylene copolymer rubber having a specific composition and viscosity, an inorganic filler having a specific particle size, and an organic peroxide, all in specified amounts. The thus-obtained polypropylene-base resin composition has high molding fluidity and are inexpensive and their moldings have excellent low-temperature impact resistance and paintability along with high stiffness. They are thus suitable for use in the production of large moldings such as automobile bumpers, fenders and body sidemembers.

    摘要翻译: 本文公开了一种聚丙烯基树脂组合物,其通过在170℃-280℃的温度下加热含有具有特定组成的结晶乙烯 - 丙烯嵌段共聚物的混合物,具有特定组成的乙烯 - 丙烯共聚物橡胶 粘度,特定粒径的无机填料和有机过氧化物,均为规定量。 由此获得的聚丙烯基树脂组合物具有高的成型流动性,并且价格便宜,并且它们的模制品具有优异的耐低温冲击性和着色性以及高刚度。 因此,它们适合用于生产诸如汽车保险杠,挡泥板和车身部件的大型模制件。

    Polypropylene resin composition having high dielectric strength
    7.
    发明授权
    Polypropylene resin composition having high dielectric strength 失效
    具有高介电强度的聚丙烯树脂组合物

    公开(公告)号:US5082888A

    公开(公告)日:1992-01-21

    申请号:US416355

    申请日:1989-10-03

    IPC分类号: C08K3/34 C08L53/00

    CPC分类号: C08K3/34

    摘要: The present invention relates to a polypropylene resin composition having high dielectric strength comprising:A) from about 50% to about 80% by weight of a crystalline ethylene-propylene block copolymer having a melt flow index (MI) at 230.degree. C. of not less than about 3 g/10 min and an ethylene content of not less than about 4% by weight;B) from about 15% to about 30% by weight of mica having an average particle size of from about 15 to about 50 microns and the following particle size distribution:.gtoreq.30 microns from about 10% to about 80% by weight.gtoreq.20 microns from about 30% to about 95% by weight.gtoreq.10 microns not less than about 60% by weight.gtoreq.5 microns not less than about 80% by weightC) from about 5% to about 20% by weight of talc having an average particle size of from about 15 to about 40 microns and the following particle size distribution:.gtoreq.30 microns from about 20% to about 65% by weight.gtoreq.20 microns from about 40% to about 80% by weight.gtoreq.10 microns from about 65% to about 95% by weight.gtoreq.5 microns not less than about 85% by weight.

    Polypropylene resin composition
    9.
    发明授权
    Polypropylene resin composition 失效
    聚丙烯树脂组合物

    公开(公告)号:US4942096A

    公开(公告)日:1990-07-17

    申请号:US437693

    申请日:1989-11-17

    摘要: The present invention relates to a polypropylene resin composition useful as an adhesive comprising(A) from about 51 wt. % to about 99 wt. % of a modified polypropylene resin graft-modified with a radical-polymerizable polar unsaturated compound or a mixture of the modified polypropylene resin graft-modified with a radical polymerizable polar unsaturated compound with an unmodified polypropylene resin,(B) a substantially non-crystalline .alpha.-olefin copolymer, and(C) an ethylene/.alpha.-olefin coplymer having a density of from about 0.860 g/cm.sup.3 to less than about 0.910 g/cm.sup.3, a n-hexane insolubility of at least about 50 wt. % and a melting point of at least 100.degree. C.,wherein the combined weights of components (B) and (C) is from about 1 wt. % to about 49 wt. %, and the weight ratio of (B)/(C) is from about 1/99 to about 99/1. The resin composition is particularly suitable for bonding a polypropylene resin layer and an ethylene/vinyl alcohol copolymer layer, and a polypropylene resin layer and a nylon layer.