Process for preparing crystalline ethylene (co)polymers
    3.
    发明授权
    Process for preparing crystalline ethylene (co)polymers 有权
    制备结晶乙烯(共)聚合物的方法

    公开(公告)号:US07834117B2

    公开(公告)日:2010-11-16

    申请号:US11887527

    申请日:2006-03-15

    IPC分类号: C08F110/02

    摘要: A process for preparing crystalline ethylene (co)polymers comprising (co)polymerizing ethylene in the presence of carried out in the presence catalyst system comprising (a) a solid catalyst component comprising Ti, Mg, halogen, ORI groups, where RI is a C1-C12 hydrocarbon group optionally containing heteroatoms, having ORI/Ti molar ratio of at least 0.5, an amount of titanium, with respect to the total weight of said solid catalyst component, higher than 4% by weight, and showing a specific pattern of the SS-NMR; and (b) an aluminum alkyl compound as a cocatalyst. The process allows to obtain in good yields ethylene polymers with narrow MWD.

    摘要翻译: 在包含(a)包含Ti,Mg,卤素,ORI基团的固体催化剂组分的情况下,在存在催化剂体系的情况下,制备结晶乙烯(共)聚合物的方法,包括(共)聚合乙烯,其中RI是C1 -C12烃基,任选地含有杂原子,ORI / Ti摩尔比至少为0.5,相对于所述固体催化剂组分的总重量,钛的量高于4重量%,并且显示了 SS-NMR; 和(b)作为助催化剂的烷基铝化合物。 该方法允许以良好的产率获得具有窄MWD的乙烯聚合物。

    Catalyst components for the polymerization of olefins
    8.
    发明授权
    Catalyst components for the polymerization of olefins 失效
    用于烯烃聚合的催化剂组分

    公开(公告)号:US07208436B2

    公开(公告)日:2007-04-24

    申请号:US10517587

    申请日:2003-05-19

    IPC分类号: C08F4/42

    摘要: Catalyst components for the polymerization of olefins CH2═CHR, wherein R is hydrogen or a hydrocarbon radical having 1–12 carbon atoms, comprising Mg, Ti, Cl, OR groups, where R is a C1–C10 alkyl group optionally containing heteroatoms, and an ether having two or more ether groups, characterized by the fact that the Mg/Ti weight ratio is lower than 3 from 2 to 6.5 the Cl/Ti weight ratio is from 1.5 to 6, the OR/Ti weight ratio is from 0.5 to 3.5 and at least 50% of the Titanium atoms are in a valence state lower than 4. The said catalyst components allow the preparation of ethylene copolymers with a low content of xylene soluble fractions.

    摘要翻译: 用于烯烃CH 2 -CHR的聚合的催化剂组分,其中R是氢或具有1-12个碳原子的烃基,其包含Mg,Ti,Cl,OR基团,其中R是C1- 任选含有杂原子的C10烷基和具有两个或更多个醚基的醚,其特征在于Mg / Ti重量比低于3的值为2至6.5,Cl / Ti重量比为1.5至6,OR / Ti重量比为0.5-3.5,并且至少50%的钛原子处于低于4的价态。所述催化剂组分允许制备低二甲苯可溶组分含量的乙烯共聚物。