Very low density polyethylene blends
    103.
    发明申请
    Very low density polyethylene blends 审中-公开
    极低密度聚乙烯共混物

    公开(公告)号:US20060276594A1

    公开(公告)日:2006-12-07

    申请号:US11504257

    申请日:2006-08-10

    IPC分类号: C08L23/04

    摘要: Blends of very low density polyethylene produced using metallocene catalysts (mVLDPE) and linear low density polyethylene (LLDPE) are disclosed. The polymer blends include a metallocene-catalyzed VLDPE polymer having a density of less than 0.916 g/cm3, the VLDPE polymer preferably being linear and without long chain branching, and a LLDPE polymer having a density of from 0.916 to 0.940 g/cm3. The polymer blends are particularly suitable in blown and cast film applications.

    摘要翻译: 公开了使用金属茂催化剂(mVLDPE)和线性低密度聚乙烯(LLDPE)生产的非常低密度聚乙烯的共混物。 聚合物共混物包括茂金属催化的密度小于0.916g / cm 3的VLDPE聚合物,VLDPE聚合物优选是线性的且不具有长链支化,并且具有密度为 0.916至0.940g / cm 3。 聚合物共混物特别适用于吹塑和流延膜应用。

    Method of making a bimetallic catalyst with higher activity
    105.
    发明授权
    Method of making a bimetallic catalyst with higher activity 失效
    制备活性较高的双金属催化剂的方法

    公开(公告)号:US06995109B2

    公开(公告)日:2006-02-07

    申请号:US10492444

    申请日:2002-10-03

    摘要: Methods of preparing bimetallic catalysts are disclosed. The methods include the steps of providing a supported non-metallocene catalyst, contacting a slurry of the supported non-metallocene catalyst in a non-polar hydrocarbon with a solution of a metallocene compound and an alumoxane, and drying the contact product to obtain a supported bimetallic catalyst. The supported non-metallocene catalyst is prepared by dehydrating a particulate support material at a temperature of greater than 600° C., preparing a slurry of the dehydrated support in a non-polar hydrocarbon, contacting the slurry with an organomagnesium compound and an alcohol, contacting the resulting slurry with a non-metallocene compound of a Group 4 or Group 5 transition metal, and drying the contact product to obtain a supported non-metallocene catalyst as a free-flowing powder. The bimetallic catalysts show increased activity relative to catalysts prepared using support materials dehydrated at lower temperatures.

    摘要翻译: 公开了制备双金属催化剂的方法。 所述方法包括提供负载的非金属茂催化剂的步骤,使非极性烃中负载的非金属茂催化剂的浆液与茂金属化合物和铝氧烷的溶液接触,并干燥该接触产物以获得负载的 双金属催化剂。 负载的非金属茂催化剂是通过在大于600℃的温度下脱水颗粒载体材料制备的,将脱水载体的浆料制备在非极性烃中,使该浆料与有机镁化合物和醇接触, 使所得浆料与第4族或第5族过渡金属的非茂金属化合物接触,并干燥该接触产物,得到作为自由流动粉末的负载型非茂金属催化剂。 相对于使用在较低温度下脱水的载体材料制备的催化剂,双金属催化剂显示出增加的活性。

    Activated catalyst systems from substituted dialuminoxane complexes
    107.
    发明授权
    Activated catalyst systems from substituted dialuminoxane complexes 有权
    来自取代的二恶烷络合物的活化催化剂体系

    公开(公告)号:US06958306B2

    公开(公告)日:2005-10-25

    申请号:US10650471

    申请日:2003-08-28

    摘要: A catalyst composition and method for preparing a supported catalyst system for olefin polymerization is provided. In one aspect, the catalyst composition includes a reaction product of a dialuminoxane and a halogen substituted aryl borane, wherein the reaction takes place on a support and at conditions sufficient to exchange one or more ligands on the dialuminoxane for one or more ligands on the halogen substituted aryl borane while on the support. In one embodiment, the method for preparing the supported catalyst system includes combining a dialuminoxane with a support to form a treated catalyst support, and combining a halogen substituted aryl borane with the treated catalyst support at conditions sufficient to exchange one or more ligands on the dialuminoxane for one or more ligands on the halogen substituted aryl borane while on the support to form a supported activator. The method further includes reacting one or more polymerization catalysts with the supported activator.

    摘要翻译: 提供了一种用于制备用于烯烃聚合的负载型催化剂体系的催化剂组合物和方法。 在一个方面,催化剂组合物包括二烷氧基和卤素取代的芳基硼烷的反应产物,其中反应在载体上进行,并且在足以在二烷基氧烷上交换一个或多个在卤素上的一个或多个配体的配体的条件下进行反应 取代的芳基硼烷。 在一个实施方案中,制备负载型催化剂体系的方法包括将二烷氧基与支持物结合以形成经处理的催化剂载体,并且在足以在二烷氧基烷上交换一个或多个配体的条件下将卤素取代的芳基硼烷与经处理的催化剂载体组合 对于卤素取代的芳基硼烷上的一个或多个配体,同时在载体上形成负载的活化剂。 该方法还包括使一种或多种聚合催化剂与负载的活化剂反应。