Process for the Preparation of Porous Ethylene Polymers and Porous Polymer Obtainable Thereof
    281.
    发明申请
    Process for the Preparation of Porous Ethylene Polymers and Porous Polymer Obtainable Thereof 审中-公开
    制备多孔乙烯聚合物及其可获得的多孔聚合物的方法

    公开(公告)号:US20070275850A1

    公开(公告)日:2007-11-29

    申请号:US10573662

    申请日:2004-09-14

    Abstract: The invention relates to a process for the preparation of porous ethylene polymers and to a specific group of ethylene polymers therefrom obtained. In particular, the present invention relates to a process for the preparation of ethylene (co)polymers characterized by: prepolymerizing propylene in the presence of a Mg, Ti, and halogen containing solid catalyst component having a porosity, higher than 0.25 cc/g up to producing from 0.1 to 15 g of propylene pre-polymer per g of catalyst component; and polymerizing ethylene in the presence of the propylene pre-polymer obtained in step (i) up to an amount of ethylene polymer ranging from 10 g to 2.5 kg per g of propylene pre-polymer.

    Abstract translation: 本发明涉及一种制备多孔乙烯聚合物的方法及其获得的特定的一组乙烯聚合物。 特别地,本发明涉及一种制备乙烯(共)聚合物的方法,其特征在于:在具有高于0.25cc / g孔隙率的Mg,Ti和含卤素固体催化剂组分的存在下预聚合丙烯 以生产0.1-15g丙烯预聚物/ g催化剂组分; 和在步骤(i)中获得的丙烯预聚物存在下使乙烯聚合,直至每克丙烯预聚物为10克至2.5千克的乙烯聚合物的量。

    Components and Catalysis for the Polymerization of Olefins
    283.
    发明申请
    Components and Catalysis for the Polymerization of Olefins 有权
    烯烃聚合的组分和催化

    公开(公告)号:US20070208150A1

    公开(公告)日:2007-09-06

    申请号:US11547111

    申请日:2005-03-08

    CPC classification number: C08F10/00 C08F110/06 C08F4/651

    Abstract: The present invention relates to a solid catalyst component for the polymerization of olefins CH2=CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, comprising Mg, Ti, halogen and an electron donor selected from β-keto-ester derivatives of a particular formula. Said catalyst components when used in the polymerization of olefins, and in particular of propylene, are capable to give polymers in high yields and with high isotactic index expressed in terms of high xylene insolubility.

    Abstract translation: 本发明涉及用于烯烃CH 2 = CHR的聚合的固体催化剂组分,其中R是氢或具有1-12个碳原子的烃基,包括Mg,Ti,卤素和电子 供体选自特定式的β-酮酯衍生物。 当用于烯烃聚合,特别是丙烯时,所述催化剂组分能够以高产率和高二甲苯不溶性表现的高全同立构指数得到聚合物。

    Propylene polymers
    284.
    发明授权
    Propylene polymers 有权
    丙烯聚合物

    公开(公告)号:US07169871B2

    公开(公告)日:2007-01-30

    申请号:US10965543

    申请日:2004-10-14

    CPC classification number: C08F10/00 C08F4/651 C08F4/6545

    Abstract: The present invention relates to propylene polymers made by using catalyst components for the polymerization of olefins comprising Mg, Ti, halogen and at least two electron donor compounds, said catalyst component being characterized by the fact that at least one of the electron donor compounds, present in an amount from 20 to 50% by mol with respect to the total amount of donors, is selected from esters of succinic acids which are not extractable, under the conditions described below, for more than 25% by mol and at least another electron donor compound which is extractable, under the same conditions, for more than 35%. The said catalyst component are capable to give polymers with high xylene insolubility, high stereoblock content and broad MWD suitable for making the polymers usable in the BOPP sector.

    Abstract translation: 本发明涉及通过使用催化剂组分制备的丙烯聚合物,其用于包含Mg,Ti,卤素和至少两种电子给体化合物的烯烃的聚合,所述催化剂组分的特征在于至少一种电子给体化合物存在 相对于供体总量为20至50摩尔%的量选自不可提取的琥珀酸的酯,在下述条件下,超过25摩尔%,并且至少另一种电子给体 在相同条件下可提取35%以上的化合物。 所述催化剂组分能够产生具有高二甲苯不溶性,高立体嵌段含量和宽MWD的聚合物,其适用于使聚合物可用于BOPP部分。

    Post-treatment for polymer pellets
    286.
    发明申请
    Post-treatment for polymer pellets 有权
    聚合物颗粒的后处理

    公开(公告)号:US20060279019A1

    公开(公告)日:2006-12-14

    申请号:US10559259

    申请日:2004-05-27

    CPC classification number: B29B9/16 B29B9/065 B29B13/045 B29B2009/165

    Abstract: A continuous process for minimizing the agglomeration of freshly manufactured polyolefin pellets comprising the steps of: feeding an aqueous stream containing polyolefin pellets to a tower, cooling said polyolefin pellets during their upward flow along said tower by means of a downward flow of a cooling agent having a density higher than said polyolefin, collecting the cooled pellets from the top of said tower after a residence time in the tower comprised between 2 and 20 minutes.

    Abstract translation: 一种用于最小化新制造的聚烯烃粒料团聚的连续方法,其包括以下步骤:将含有聚烯烃粒料的含水物流送入塔中,通过向下流动的冷却剂将所述聚烯烃粒料向上流动,冷却所述聚烯烃粒料,所述冷却剂具有 密度高于所述聚烯烃,在塔中的停留时间为2至20分钟之后,从所述塔的顶部收集冷却的颗粒。

    Magnesium dichloride-alcohol adducts and catalyst components obtained therefrom
    287.
    发明申请
    Magnesium dichloride-alcohol adducts and catalyst components obtained therefrom 有权
    二氯化镁 - 醇加合物和由其获得的催化剂组分

    公开(公告)号:US20060217261A1

    公开(公告)日:2006-09-28

    申请号:US10550986

    申请日:2004-03-09

    Abstract: The present invention relates to MgCl2.(EtOH),m(ROH)n(H20)p adduct in which R is a C1-C15 hydrocarbon group different from ethyl, n and m are indexes, higher than 0, satisfying the equations (n+m)≧0.7 and 0.05≦n/(n+m)≦0.95 and p is a number ranging from 0 to 0.7 with the proviso that when R is methyl and (n+m) is in the range of 0.7 to 1, the value of n/(n+m) ranges from 0.05 to 0.45. The catalyst components obtained from the adducts of the present invention are capable to give catalysts for the polymerization of olefins characterized by enhanced activity with respect to the catalysts prepared from the adducts of the prior art.

    Abstract translation: 本发明涉及MgCl 2(EtOH),(II),(H 2 O)2(H 2 O) 其中R是不同于乙基的C 1 -C 15烃基的加合物,n和m是指数,高于0,满足式(n + m)= 0.7和0.05 <= n / (n + m)<= 0.95,p为0〜0.7的数,条件是当R为甲基且(n + m)为0.7〜1时,n /(n + m) )为0.05〜0.45。 从本发明的加合物得到的催化剂组分能够产生用于烯烃聚合的催化剂,其特征在于相对于由现有技术的加合物制备的催化剂具有增强的活性。

    Biaxially oriented polypropylene films
    289.
    发明授权
    Biaxially oriented polypropylene films 有权
    双轴取向聚丙烯薄膜

    公开(公告)号:US06994915B2

    公开(公告)日:2006-02-07

    申请号:US10296122

    申请日:2001-12-13

    Abstract: Biaxially oriented polypropylene films (BOPP) having at least one layer of a propylene polymer containing at least 0.8% by weight of ethylene and, optionally, one or more C4-C10 α-olefins, or a propylene polymer composition containing at least 0.8% by weight of one or more comonomers selected from the group consisting of ethylene and C4-C10 α-olefins, and having I) a melting temperature of 155° C. or higher; and II) a xylene soluble fraction at room temperature lower than 3% by weight, and a value of the ratio of the polymer fraction collected at the temperature range from 25° C. to 95° C. (by TREF) to the said xylene soluble fraction higher than 8.

    Abstract translation: 双轴取向聚丙烯薄膜(BOPP)具有至少一层丙烯聚合物,其含有至少0.8重量%的乙烯和任选的一个或多个C 4 -C 10 >α-烯烃或含有至少0.8重量%的一种或多种共聚单体的丙烯聚合物组合物,所述共聚单体选自乙烯和C 4 -C 10α-烯烃 - 烯烃,和

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