Method for preparing propylene polymers having broad molecular weight distribution
    31.
    发明授权
    Method for preparing propylene polymers having broad molecular weight distribution 失效
    制备具有宽分子量分布的丙烯聚合物的方法

    公开(公告)号:US06800703B1

    公开(公告)日:2004-10-05

    申请号:US10686066

    申请日:2003-10-15

    CPC classification number: C08F110/06 C08F10/00 C08F4/6465 C08F2500/04

    Abstract: A method for producing propylene polymers having a broad molecular weight distribution (MWD) is disclosed. The method uses a Ziegler catalyst and one silane donor. The silane donor is selected from vinyltrimethoxysilane or dicyclohexyldimethoxysilane. The polymers made by the method have an MWD greater than or equal to 7.0.

    Abstract translation: 公开了具有宽分子量分布(MWD)的丙烯聚合物的制备方法。 该方法使用齐格勒催化剂和一种硅烷供体。 硅烷供体选自乙烯基三甲氧基硅烷或二环己基二甲氧基硅烷。 通过该方法制备的聚合物具有大于或等于7.0的MWD。

    Ethylene polymerization catalyst and catalyst system
    32.
    发明授权
    Ethylene polymerization catalyst and catalyst system 失效
    乙烯聚合催化剂和催化剂体系

    公开(公告)号:US06323148B1

    公开(公告)日:2001-11-27

    申请号:US09441801

    申请日:1999-11-17

    Inventor: Mark K. Reinking

    Abstract: An ethylene polymerization catalyst and catalyst system which provides an ethylene copolymer which is characterized by desirable ER shift values. The high level ER shift of these polymers produce films having high impact strength. The catalyst is prepared by treating a support material with an agent selected from the group consisting of a compound having the structural formula BX53, where X5 is fluorine, chlorine, bromine, iodine or OR5, where R5 is C1-C6 alkyl; a compound having the structural formula X62 where X6 is fluorine, bromine or iodine; a compound having the structural formula NR6, where R6 is C1-C6 alkyl or OR7, where R7 is C1-C8 alkyl; and a compound having the structural formula Ti(OR8)4, where R8 is C1-C6 alkyl or phenyl to reduced surface hydroxyl group concentration of the support material. The thus treated support material is thereupon contacted with a dialkylmagnesium compound or complex, an alcohol compound or a silane compound and a transition metal compound, in that order. Alternatively, the sequence of contact of the transition metal compound and the silane compound may be reversed, as may be the sequence of addition of the dialkylmagnesium compound or complex and the silane compound.

    Abstract translation: 提供乙烯共聚物的乙烯聚合催化剂和催化剂体系,其特征在于所需的ER转移值。 这些聚合物的高水平ER变化产生具有高冲击强度的膜。 通过用选自具有结构式BX53的化合物,其中X5是氟,氯,溴,碘或OR5的化合物处理载体材料来制备催化剂,其中R5是C1-C6烷基; 具有结构式X62的化合物,其中X 6是氟,溴或碘; 具有结构式NR 6的化合物,其中R 6是C 1 -C 6烷基或OR 7,其中R 7是C 1 -C 8烷基; 和具有结构式Ti(OR 8)4的化合物,其中R 8是C 1 -C 6烷基或苯基,以降低载体材料的表面羟基浓度。 随后将如此处理的载体材料依次与二烷基镁化合物或络合物,醇化合物或硅烷化合物和过渡金属化合物接触。 或者,过渡金属化合物和硅烷化合物的接触顺序可以相反,可以是二烷基镁化合物或络合物和硅烷化合物的添加顺序。

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