Heat resistant polypropylene film
    63.
    发明授权
    Heat resistant polypropylene film 有权
    耐热聚丙烯薄膜

    公开(公告)号:US08440319B2

    公开(公告)日:2013-05-14

    申请号:US11801536

    申请日:2007-05-10

    Abstract: A heat resistant film that comprises at least one layer that comprises a high crystallinity propylene polymer having a melt flow rate of from 0.5 g/10 min. to 15 g/10 min. and a xylene solubles of less than 3.5%. The propylene polymer may have a melting point above 158° C. The heat resistant film may further comprise at least a second layer, which may be a heterophasic random copolymer. The heat resistant film may be, for example, a blown film, a cast film, or an oriented film, and may be used in such articles of manufacture as construction films, retort packaging, and laminated articles.

    Abstract translation: 一种耐热膜,其包含至少一层包含熔体流动速率为0.5g / 10min的高结晶度丙烯聚合物。 至15g / 10min。 和二甲苯可溶物少于3.5%。 丙烯聚合物可以具有高于158℃的熔点。耐热膜可以进一步包含至少第二层,其可以是多相无规共聚物。 耐热膜可以是例如吹塑薄膜,流延薄膜或取向薄膜,并且可以用于制造制造例如建筑薄膜,蒸煮包装和层压制品。

    Polyolefin production with a high performance support for a metallocene catalyst system
    64.
    发明授权
    Polyolefin production with a high performance support for a metallocene catalyst system 有权
    聚烯烃生产具有高性能支持的茂金属催化剂体系

    公开(公告)号:US08436112B2

    公开(公告)日:2013-05-07

    申请号:US12013774

    申请日:2008-01-14

    Abstract: The invention is directed to a metallocene catalyst system comprising an inert silica support having pores with a peak pore volume of greater than about 0.115 mL/g at a pore diameter between about 250 Angstroms and about 350 Angstroms, and an alumoxane activator, with the metallocene being bound substantially throughout the support. The activator is grafted to the support in a solvent at a reflux temperature of toluene to obtain an aluminoxane on silica, and a metallocene component is added to make a MCS having a metallocene loading of about 2 wt %. This facilitates the production of metallocene catalyst systems having increased catalytic activity than previously recognized that is at least about 20 percent higher than the catalytic activity for a metallocene loading of about 1 wt % where the activator is grafted to the support at room temperature.

    Abstract translation: 本发明涉及一种茂金属催化剂体系,其包含惰性二氧化硅载体,其具有在孔直径约250埃至约350埃之间具有大于约0.115mL / g的峰孔体积的孔,以及铝氧烷活化剂与茂金属 在整个支撑体上大体上被束缚。 将活化剂在甲苯的回流温度下在溶剂中接枝到载体上,得到二氧化硅上的铝氧烷,并加入金属茂组分以制备茂金属负载量为约2重量%的MCS。 这促进了催化活性增加的茂金属催化剂体系的生产,其催化活性比之前所公认的高约1%(重量),其中活化剂在室温下接枝到载体上的金属茂负载量的催化活性高至少约20%。

    Dilute liquid phase alkylation
    65.
    发明授权
    Dilute liquid phase alkylation 有权
    稀液相烷基化

    公开(公告)号:US08426661B2

    公开(公告)日:2013-04-23

    申请号:US13024602

    申请日:2011-02-10

    Inventor: James R. Butler

    Abstract: Methods of forming ethylbenzene are described herein. In one embodiment, the method includes contacting dilute ethylene with benzene in the presence of an alkylation catalyst to form ethylbenzene, wherein such contact occurs in a liquid phase reaction zone and recovering ethylbenzene from the reaction zone.

    Abstract translation: 本文描述了形成乙苯的方法。 在一个实施方案中,该方法包括在烷基化催化剂存在下使稀乙烯与苯接触以形成乙苯,其中这种接触发生在液相反应区中并从反应区回收乙苯。

    Polystyrene blends
    67.
    发明授权
    Polystyrene blends 有权
    聚苯乙烯共混物

    公开(公告)号:US08389636B2

    公开(公告)日:2013-03-05

    申请号:US13530212

    申请日:2012-06-22

    CPC classification number: C08L25/06 C08L2205/02 C08L2207/20

    Abstract: A method of preparing a polystyrene blend that includes combining a first polystyrene composition having a first melt flow index with a second polystyrene composition having a second melt flow index and forming a polystyrene blend, the second melt flow index being at least 2 dg/min higher that the first melt flow index. The polystyrene blend has an observed tensile strength value greater than 3% above the expected tensile strength value. The second polystyrene composition can include a recycled polystyrene material, which can include expanded polystyrene. An alternate method of preparing the polystyrene blend includes combining a polystyrene composition with a styrene monomer to form a reaction mixture, polymerizing the reaction mixture and obtaining a polystyrene blend, where the polystyrene containing composition has a melt flow index at least 2 dg/min higher than the melt flow index of the styrene monomer after it has been polymerized.

    Abstract translation: 一种制备聚苯乙烯共混物的方法,其包括将具有第一熔体流动指数的第一聚苯乙烯组合物与具有第二熔体流动指数的第二聚苯乙烯组合物组合并形成聚苯乙烯共混物,所述第二熔体流动指数至少为2dg / min 第一个熔体流动指数。 聚苯乙烯共混物的观测拉伸强度值大于预期拉伸强度值的3%以上。 第二聚苯乙烯组合物可以包括再循环的聚苯乙烯材料,其可以包括发泡聚苯乙烯。 制备聚苯乙烯共混物的替代方法包括将聚苯乙烯组合物与苯乙烯单体组合以形成反应混合物,使反应混合物聚合并获得聚苯乙烯共混物,其中含聚苯乙烯的组合物的熔体流动指数至少为2dg / min 比苯乙烯单体聚合后的熔体流动指数高。

Patent Agency Ranking