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7 条记录 (耗时 0.017 秒)

    PROPYLENE HOMOPOLYMER HAVING HIGH MELT STRENGTH AND PREPARATION METHOD THEREOF
    3.
    发明公开
    PROPYLENE HOMOPOLYMER HAVING HIGH MELT STRENGTH AND PREPARATION METHOD THEREOF 有权
    HERSTELLUNGSVERFAHRENFÜRPROPYLEN-HOMOPOLYMER MIT HOHER SCHMELZFESTIGKEIT

    公开(公告)号：EP2527376A1

    公开(公告)日：2012-11-28

    申请号：EP11734336.8

    申请日：2011-01-21

    申请人： China Petroleum & Chemical Corporation ,  Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation

    发明人： SONG, Wenbo ,  GUO, Meifang ,  ZHANG, Shijun ,  WEI, Wenjun ,  HUANG, Honghong ,  YU, Luqiang ,  LIU, Tao ,  HU, Huijie ,  XU, Huan ,  YU, Peiqian ,  ZHANG, Xiaomeng

    IPC分类号： C08F10/06 ,  C08F2/38

    CPC分类号： C08F110/06 ,  C08F2/001 ,  C08F2500/01 ,  C08F2500/04 ,  C08F2500/11 ,  C08F2500/12 ,  C08F4/6465 ,  C08F4/6492

    摘要： The present invention provides a process for preparing high melt strength propylene polymer by direct polymerization, comprising that a propylene polymer with wide molecular weight distribution and containing "very high molecular weight fraction" can be prepared by controlling the species and ratios of the external electron donors in the Ziegler-Natta catalyst system at different reaction stages according to the requirment for different molecular weight fractions in the different propylene polymerization stage of the series operation, and said polymer has excellent mechnical properties, especially with very high melt strength. The present invention also provides a propylene homopolymer with high melt strength, comprising the following features: (1) the MFR is 0.2-10g/10min at 230°C with a load of 2.16kg; (2) the molecular weight distribution M w /M n is 6-20; (3) the content of the fraction with a molecular weight higher than 5,000,000 is higher than or equal to 0.8wt%; (4) M z+1 /M n is higher than or equal to 70. Said homopolymer can be used in the preparation of foam products, thermoforming products, biaxial stretching films, blown films and blow-molded products.

    摘要翻译： 本发明提供了一种通过直接聚合制备高熔体强度丙烯聚合物的方法，其包括具有宽分子量分布并含有“非常高分子量级分”的丙烯聚合物可以通过控制外部电子给体的种类和比例 在不同反应阶段的齐格勒 - 纳塔催化剂体系中，根据不同分子量级分在不同的丙烯聚合反应阶段的要求，所述聚合物具有优异的机械性能，特别是具有非常高的熔体强度。 本发明还提供了具有高熔体强度的丙烯均聚物，其特征在于：（1）在230℃，2.16kg载荷下，MFR为0.2-10g / 10min; （2）分子量分布M w / M n为6〜20; （3）分子量高于5,000,000的级分的含量高于或等于0.8wt％; （4）M z + 1 / M n高于或等于70.所述均聚物可用于制备泡沫产品，热成型产品，双轴拉伸膜，吹塑薄膜和吹塑产品。

    A PROCESS FOR THE PREPARATION OF HIGH PERFORMANCE POLYPROPYLENE
    4.
    发明公开
    A PROCESS FOR THE PREPARATION OF HIGH PERFORMANCE POLYPROPYLENE 有权
    VERFAHREN ZUR HERSTELLUNG VONHOCHLEISTUNGSFÄHIGEMPOLYPROPYLEN

    公开(公告)号：EP2009032A2

    公开(公告)日：2008-12-31

    申请号：EP07720888.2

    申请日：2007-04-20

    申请人： China Petroleum&Chemical Corporation ,  Beijing Research Institute of Chemical Industry, China Petroleum &Chemical Corporation

    发明人： SONG, Wenbo ,  GUO, Meifang ,  QIAO, Jinliang ,  YANG, Zhichao ,  ZHANG, Shijun ,  YU, Luqiang

    IPC分类号： C08F10/06 ,  C08F2/00

    CPC分类号： C08F110/02 ,  C08F10/00 ,  C08F110/06 ,  Y02P20/52 ,  Y10T428/139 ,  C08F2/001 ,  C08F2500/04 ,  C08F2500/15 ,  C08F4/6465

    摘要： The invention discloses a process for preparing high-performance propylene polymers, the process utilizing a high activity, highly stereoselective Ziegler-Natta catalyst and two or more stages of polymerization carried out under different hydrogen concentrations to prepare propylene polymers having broad molecular weight distribution, wherein non-uniformness of isotacticity of molecular chains of the final propylene polymers is improved by adjusting or controlling stereoselectivity of catalytic active sites under different hydrogen concentrations, namely, making the low molecular weight fraction of the polymers having a higher isotacticity and making the high molecular weight fraction of the polymers having a lower isotacticity, thereby overcoming the drawbacks of the propylene polymers having broad molecular weight distribution known in the art. The resulting final polymers have excellent combined properties, in particular, remarkably improved mechanical properties.

    摘要翻译： 本发明公开了一种制备高性能丙烯聚合物的方法，该方法利用高活性，高立体选择性齐格勒 - 纳塔催化剂和在不同氢气浓度下进行的两个或多个阶段的聚合，以制备具有宽分子量分布的丙烯聚合物，其中 通过在不同的氢浓度下调节或控制催化活性位点的立体选择性，即使得聚合物的低分子量分数具有更高的全同立构规整度并使其具有高分子量，从而提高了最终丙烯聚合物分子链的全同立构规整度的不均匀性 具有较低全同立构规整度的聚合物的分数，从而克服了本领域已知的具有宽分子量分布的丙烯聚合物的缺点。 所得到的最终聚合物具有优异的组合性能，特别是显着提高的机械性能。

    RUBBER COMPOSITION AND PREPARATION METHOD AND VULCANIZED RUBBER THEREOF
    5.
    发明公开
    RUBBER COMPOSITION AND PREPARATION METHOD AND VULCANIZED RUBBER THEREOF 审中-公开
    橡胶组合物及其制造方法和橡胶硫化THEREOF

    公开(公告)号：EP2772512A1

    公开(公告)日：2014-09-03

    申请号：EP12843797.7

    申请日：2012-10-26

    申请人： China Petroleum&Chemical Corporation ,  Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation

    发明人： QIAO, Jinliang ,  CONG, Yuexin ,  ZHANG, Xiaohong ,  LI, Ying ,  GAO, Jianming ,  ZHANG, Qianmin ,  SONG, Zhihai ,  SUN, Yanling ,  GUO, Meifang ,  SONG, Peijun ,  CAI, Chuanlun ,  ZHAO, Guoxun ,  SHI, Hongwei ,  QI, Guicun ,  LAI, Jinmei ,  ZHANG, Hongbin ,  WANG, Ya ,  LI, Binghai ,  WANG, Xiang

    IPC分类号： C08L9/06 ,  C08L9/08 ,  C08L21/00 ,  C08L21/02 ,  C08J3/28 ,  C08J3/26 ,  C08J3/24

    CPC分类号： C08L9/08 ,  B60C1/0016 ,  C08J3/005 ,  C08J3/26 ,  C08J3/28 ,  C08J2309/00 ,  C08J2309/06 ,  C08J2309/08 ,  C08J2321/00 ,  C08J2409/04 ,  C08L7/00 ,  C08L9/06 ,  C08L21/00 ,  C08L23/22 ,  C08L2205/02 ,  C08L2205/22 ,  C08L2312/06 ,  C08L2555/22 ,  Y02T10/862

    摘要： The present application relates to a rubber composition, preparation method and vulcanized rubber thereof. The rubber composition comprises uncrosslinked rubber and rubber particles having crosslinked structure dispersed therein, wherein the rubber particles having crosslinked structure are synthetic rubber particles and/or natural rubber particles, e.g. one or more selected from the group consisting of natural rubber particles, styrene-butadiene rubber particles, carboxylated styrene-butadiene rubber particles, nitrile butadiene rubber particles, carboxylated nitrile butadiene rubber particles, chloroprene rubber particles, polybutadiene rubber particles, silicone rubber particles or acrylic rubber particles, styrene-butadiene-vinylpyridine rubber particles and the like, with an average particle size of 20 to 500 nm and a gel content of 60% by weight or higher, and the uncrosslinked rubber is styrene-butadiene rubber, and wherein the weight ratio of the rubber particles having crosslinked structure to the uncrosslinked rubber is 1:99-20:80. The rubber composition is obtained by mixing the components comprising uncrosslinked rubber latex and latex of rubber particles having crosslinked structure and then coagulating them. The latex of rubber particles having crosslinked structure is a rubber latex after radiation crosslinking. The vulcanized rubber of the rubber composition can be improved simultaneously in rolling resistance, wet skid resistance and wear resistance and thus can be used as high performance vehicle tread rubber.

    摘要翻译： 本申请涉及一种橡胶组合物，及其制备方法和硫化橡胶。 该橡胶组合物包含具有交联结构的分散在其中，具有worin交联结构的橡胶颗粒未交联橡胶和橡胶颗粒是合成橡胶颗粒和/或天然橡胶颗粒，例如 一个或选自天然橡胶粒子，苯乙烯 - 丁二烯橡胶粒子，羧化苯乙烯 - 丁二烯橡胶粒子，丁腈橡胶粒子，羧化丁腈橡胶颗粒，氯丁橡胶颗粒，聚丁二烯橡胶颗粒，硅橡胶颗粒或丙烯酸的多个所选择的 橡胶颗粒，苯乙烯 - 丁二烯 - 乙烯基吡啶橡胶颗粒等，在20的平均粒径为500nm且（重量）或更高的60％的凝胶含量，和未交联的橡胶是苯乙烯 - 丁二烯橡胶，和worin重量 具有交联结构的未交联橡胶的橡胶颗粒的比例为1：99-20：第80个 的橡胶组合物可通过混合含非交联的橡胶胶乳和具有交联结构的橡胶粒子的胶乳的组件，然后凝固它们来获得。 具有交联结构的橡胶颗粒的胶乳是辐射交联后的橡胶胶乳。 该橡胶组合物的硫化橡胶可以同时在滚动阻力，抗湿滑性能得到改善，耐磨损性，因此可以用作高性能车辆胎面橡胶。