High-stiffness propylene polymers and a process for the preparation thereof
    3.
    发明授权
    High-stiffness propylene polymers and a process for the preparation thereof 有权
    高刚性丙烯聚合物及其制备方法

    公开(公告)号:US06747103B1

    公开(公告)日:2004-06-08

    申请号:US09959780

    申请日:2001-11-07

    IPC分类号: C08F4642

    摘要: The present invention concerns high-stiffness polymer composition and a process for producing a polymer composition by nucleated with a polymeric nucleating agent containing vinyl compound units. The method comprises modifying a catalyst by polymerizing a vinyl compound in the presence of said catalyst and a strongly coordinating donor in a medium, which does not essentially dissolve the polymerized vinyl compound, and by continuing the polymerization of the vinyl compound until the concentration of unreacted vinyl compounds is less than about 0.5 wt-%. The thus obtained modified catalyst composition is used for polymerizing propylene optionally together with comonomers in the presence of said modified catalyst composition. Modification of the catalyst according to the present invention will reduce production costs and provide highly reliable catalyst activity and polymers of high stiffness.

    摘要翻译: 本发明涉及高刚性聚合物组合物和通过含有乙烯基化合物单元的聚合物成核剂成核的聚合物组合物的制备方法。 该方法包括通过在所述催化剂和强配位供体的存在下聚合乙烯基化合物来改性催化剂,该介质不会基本上溶解聚合的乙烯基化合物,并且通过继续乙烯基化合物的聚合直到未反应的浓度 乙烯基化合物小于约0.5重量%。 由此获得的改性催化剂组合物用于在所述改性的催化剂组合物的存在下将丙烯任选地与共聚单体聚合。 根据本发明的催化剂的改性将降低生产成本并提供高度可靠的催化剂活性和高刚度的聚合物。

    UNORIENTED FILM
    6.
    发明申请
    UNORIENTED FILM 有权
    不详电影

    公开(公告)号:US20140155547A1

    公开(公告)日:2014-06-05

    申请号:US14232201

    申请日:2012-07-10

    IPC分类号: C08L23/14

    摘要: Unoriented film comprising at least 70 wt.-% of an heterophasic propylene copolymer, said heterophasic propylene copolymer comprises a matrix being a random propylene copolymer and an elastomeric propylene copolymer dispersed in said matrix, wherein the heterophasic propylene copolymer has (a) a melt flow rate MFR2 (230° C.) in the range of 3.0 to 10.0 g/10 min, (b) a melting temperature in the range of 130 to 150° C., (c) a xylene cold soluble content in the range of 25 to 50 wt.-%, (d) comonomer content in the range of 10.0 to 15.0 wt.-%, wherein further the xylene cold soluble content of the heterophasic propylene copolymer has (e) a comonomer content in the range of 20 to 30 wt.-% and (f) an intrinsic viscosity in the range of 0.8 to below 2.0 dl/g.

    摘要翻译: 所述多相丙烯共聚物包含至少70重量%的多相丙烯共聚物的无取向膜,所述多相丙烯共聚物包含分散在所述基质中的无规丙烯共聚物和弹性体丙烯共聚物的基质,其中所述多相丙烯共聚物具有(a)熔体流动 速率MFR 2(230℃)在3.0至10.0g / 10分钟的范围内,(b)熔融温度在130至150℃的范围内,(c)二甲苯冷可溶物的含量范围为25 至(d)共聚单体含量在10.0至15.0重量%范围内,其中异相丙烯共聚物的二甲苯冷可溶物含量还具有(e)共聚单体含量为20至30重量% (f)0.8至2.0dl / g范围内的特性粘度。

    Method to produce very stiff polypropylene
    7.
    发明授权
    Method to produce very stiff polypropylene 失效
    生产非常硬的聚丙烯的方法

    公开(公告)号:US08557917B2

    公开(公告)日:2013-10-15

    申请号:US12998263

    申请日:2009-10-06

    摘要: The present invention relates to a process for the preparation of a propylene homo- or copolymer, comprising the following steps: (i) feeding propylene and hydrogen, and optionally one or more comonomers, to a reactor R1, wherein the hydrogen is fed to the reactor R1 in a periodically varying amount, (ii) preparing a first fraction of the propylene homo- or copolymer in the reactor R1 in the presence of a catalyst, (iii) transferring the first fraction to a reactor R2, and (iv) preparing a second fraction of the propylene homo- or copolymer in the reactor R2, wherein the melt flow rate MFR (2.16 kg, 230° C.) of the propylene homo- or copolymer is higher than the melt flow rate MFR (2.16 kg, 230° C.) of the first fraction.

    摘要翻译: 本发明涉及一种制备丙烯均聚物或共聚物的方法,包括以下步骤:(i)将丙烯和氢气以及任选的一种或多种共聚单体进料到反应器R1中,其中将氢气供给到 反应器R1以周期性变化的量,(ii)在催化剂存在下,在反应器R1中制备丙烯均聚物或共聚物的第一部分,(iii)将第一部分转移到反应器R2,和(iv)制备 丙烯均聚物或共聚物在反应器R2中的第二部分,其中丙烯均聚物或共聚物的熔体流动速率MFR(2.16kg,230℃)高于熔体流动速率MFR(2.16kg,230 ℃)。

    High flow polypropylene composition
    8.
    发明授权
    High flow polypropylene composition 有权
    高流动聚丙烯组合物

    公开(公告)号:US08541507B2

    公开(公告)日:2013-09-24

    申请号:US13144522

    申请日:2010-06-30

    IPC分类号: C08F8/00 C08L23/10

    摘要: The present invention relates to a high flow polypropylene composition comprising (A) a low molecular weight propylene homopolymer fraction and (B) a high molecular weight propylene copolymer fraction, having a comonomer content of not higher than 8 wt %, wherein the ratio between the MFR2 of fraction (A) and the MFR2 of fraction (B) is at least 3 and wherein the MFR2 of the entire composition is at least 5 g/10 min, the values of MFR2 being measured according to ISO 1133 (230° C., 2.16 kg load), and to processes for producing such compositions and to articles made there from.

    摘要翻译: 本发明涉及一种高流动聚丙烯组合物,其包含(A)低分子量丙烯均聚物部分和(B)共聚单体含量不高于8重量%的高分子量丙烯共聚物部分,其中, 级分(A)的MFR 2和级分(B)的MFR 2为至少3,并且其中整个组合物的MFR 2为至少5g / 10min,MFR 2的值根据ISO 1133(230℃)测量 ,2.16kg负荷),以及用于生产这种组合物的方法和由其制成的制品。

    Method for Preparing an Olefin Polymerization Catalyst Composition
    9.
    发明申请
    Method for Preparing an Olefin Polymerization Catalyst Composition 失效
    制备烯烃聚合催化剂组合物的方法

    公开(公告)号:US20080167434A1

    公开(公告)日:2008-07-10

    申请号:US10561016

    申请日:2004-06-07

    IPC分类号: C08F10/00 C08F4/22 C08F4/02

    摘要: The present invention provides for a method for preparing a storable fluidic olefin polymerisation catalyst composition, said catalyst comprising an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC), or of an actinide or lanthanide, and the use of such composition for polymerising α-olefins.

    摘要翻译: 本发明提供了一种制备可储存的流化烯烃聚合催化剂组合物的方法,所述催化剂包含周期表(IUPAC)中第3至10族的过渡金属或锕系元素或镧系元素的有机金属化合物, 的这种用于聚合α-烯烃的组合物。

    Prepolymerized catalyst composition, a process for the preparation
thereof, and a process for polymerizing .alpha.-olefins
    10.
    发明授权
    Prepolymerized catalyst composition, a process for the preparation thereof, and a process for polymerizing .alpha.-olefins 失效
    预聚合的催化剂组合物,其制备方法和α-烯烃的聚合方法

    公开(公告)号:US5641721A

    公开(公告)日:1997-06-24

    申请号:US571029

    申请日:1995-12-12

    摘要: The present invention concerns prepolymerized catalyst composition for polymerization of .alpha.-olefins, a process for the preparation thereof and a process for polymerization of .alpha.-olefins. According to the polymerization process a procatalyst composition containing a transition metal is prepolymerized with a monomer in order to produce a prepolymerized Ziegler-Natta type catalyst composition and said catalyst composition is contacted with an alpha-olefin monomer, in particular with ethylene or propylene, for preparing a polymer. According to the invention the procatalyst composition is preferably prepolymerized in a medium which is inert to the catalyst components, the viscosity of the medium being so high that the catalyst does not substantially settle in this medium. Because the catalyst composition according to the invention does not have to be dried before being fed into the medium, its activity is high before and during polymerization.

    摘要翻译: 本发明涉及用于α-烯烃聚合的预聚合催化剂组合物,其制备方法和α-烯烃聚合方法。 根据聚合方法,将含有过渡金属的原料催化剂组合物与单体预聚合以制备预聚合的齐格勒 - 纳塔型催化剂组合物,并将所述催化剂组合物与α-烯烃单体,特别是与乙烯或丙烯接触,用于 制备聚合物。 根据本发明,原催化剂组合物优选在对催化剂组分是惰性的介质中预聚合,介质的粘度如此之高,使得催化剂基本上不会沉淀在该介质中。 因为根据本发明的催化剂组合物在进料到介质中之前不必被干燥,因此在聚合之前和聚合过程中其活性很高。