Catalyst component and catalyst for the polymerization of alpha-olefins
to stereoregular polymers having narrow molecular weight distribution
    6.
    发明授权
    Catalyst component and catalyst for the polymerization of alpha-olefins to stereoregular polymers having narrow molecular weight distribution 失效
    用于将α-烯烃聚合成具有窄分子量分布的立体规则聚合物的催化剂组分和催化剂

    公开(公告)号:US4980329A

    公开(公告)日:1990-12-25

    申请号:US353223

    申请日:1989-05-15

    CPC分类号: C08F10/00

    摘要: Disclosed is a component for a catalyst for the polymerization of alpha-olefins to stereoregular polymers having narrow molecular weight distribution. The product is formed by the reaction of a solid catalyst-forming component comprising (1) a Ti compound having at least one Ti-halogen bond and (2) optionally, an electron-donor compound, supported on an anhydrous Mg dihalide in active form, with certain amounts of an organic compound (AH) containing at least one active hydrogen atom, in the presence of a liquid medium which is inert with respect to the Ti compound and the other components of the catalyst component, and which has a dielectric constant greater than 2 at 20.degree. C.Catalysts comprising the reaction product of the solid catalyst component prepared as above described, with an Al-alkyl compound and an electron-donor compound are also disclosed.

    摘要翻译: 公开了用于将α-烯烃聚合成具有窄分子量分布的立体规则聚合物的催化剂的组分。 该产物是由固体催化剂形成组分反应形成的,该组分包含(1)具有至少一个Ti-卤素键的Ti化合物和(2)任选的电子给体化合物,负载在活性形式的无水Mg二卤化物上 在一定量的含有至少一个活性氢原子的有机化合物(AH)的存在下,相对于Ti化合物和催化剂组分的其它组分是惰性的,并且具有介电常数 在20℃下大于2的催化剂也包括如上所述制备的固体催化剂组分与烷基铝化合物和电子给体化合物的反应产物。

    Spherical components and catalysts for the polymerization of olefins
    7.
    发明授权
    Spherical components and catalysts for the polymerization of olefins 失效
    用于烯烃聚合的球形组分和催化剂

    公开(公告)号:US5508245A

    公开(公告)日:1996-04-16

    申请号:US979243

    申请日:1992-11-20

    CPC分类号: C08F10/00

    摘要: Spherical components of catalysts for the polymerization of olefins comprising:(a) a vanadium compound selected from the compounds of formula VOX.sub.2 Y or VX.sub.n Y.sub.n-4n, where X is Cl or Br and Y is Cl, Br OR or NR.sup.I.sub.2(b) MgCl.sub.2 in spherical form.Said components have an average diameter greater than 1 .mu.m, a surface area of at least 10 m.sup.2 /g, a porosity of at least 0.1 g/cm.sup.3 and an X-ray spectrum having particular characteristics.

    摘要翻译: 用于烯烃聚合的催化剂的球形组分包括:(a)选自式VOX2Y或VXnYn-4n的化合物的钒化合物,其中X是Cl或Br,Y是Cl,Br OR或NRI2(b)球形中的MgCl 2 形成。 所述组分具有大于1μm的平均直径,至少10m 2 / g的表面积,至少0.1g / cm 3的孔隙率和具有特定特征的X射线谱。