Electrostatically paintable injection moldable blend of propylene
polymer, ethylene/higher .alpha.-olefin copolymer rubber and carbon
black
    6.
    发明授权
    Electrostatically paintable injection moldable blend of propylene polymer, ethylene/higher .alpha.-olefin copolymer rubber and carbon black 失效
    丙烯聚合物,乙烯/更高级(60-烯烃共聚物橡胶和炭黑)的静电可喷涂成型混合物

    公开(公告)号:US3963647A

    公开(公告)日:1976-06-15

    申请号:US499555

    申请日:1974-08-22

    CPC分类号: C08K3/04 C08L23/16

    摘要: An injection moldable, electrostatically paintable polyolefin composition comprising 100 parts of an ethylene/higher .alpha.-olefin copolymer rubber, 20-100 parts of a crystalline propylene polymer, and carbon black, said carbon black having a mean particle diameter of from about 15-30 millimicrons, an oil absorption number (A) having a minimum value of about 40 cc/100 g. and a maximum value wherein A is calculated from the formula A = 0.3116D.sup.2 -18.708D +359.67, wherein D is the mean particle diameter, with the proviso that the maximum value of A is never greater than 130 cc/100 g., said carbon black present within a range determined by the following formulas:Minimum parts carbon black = 2.157D -0.0145D.sup.2 -0.00467AD -5.03;maximum parts carbon black = 0.863D -0.005OD.sup.2 -0.00625AD -0.3663A +0.00159A.sup.2 +49.19;wherein A and D have the values given hereinabove and parts carbon black is based upon the total weight of polymers. The elastomeric composition is used for injection molding large thin sheets for use, for example, as sight shields on the exterior of automotive vehicles.

    摘要翻译: 一种可注射成型的静电喷涂聚烯烃组合物,其包含100份乙烯/更高级α-烯烃共聚物橡胶,20-100份结晶丙烯聚合物和炭黑,所述炭黑的平均粒径为约15-30 毫当量,具有最小值约40cc / 100g的吸油数(A)。 并且其中A由式A = 0.3116D2 -18.708D +359.67计算的最大值,其中D是平均粒径,条件是A的最大值不应大于130cc / 100g,所述 炭黑存在于由下式决定的范围内: