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    • 4. 发明授权
    • Thermosetting resins with gelled nanometer-sized rubber particles
    • 具有凝胶状纳米尺寸橡胶颗粒的热固性树脂
    • US08609767B2
    • 2013-12-17
    • US10266976
    • 2002-10-08
    • Fan HuangJinliang QiaoYiqun LiuXiaohong ZhangJianming GaoZhihai Song
    • Fan HuangJinliang QiaoYiqun LiuXiaohong ZhangJianming GaoZhihai Song
    • C08L61/10C08L61/20C08L67/06C08L83/04
    • C08L63/00C08G77/04C08L19/003C08L61/06C08L67/06C08L83/04C08L2666/08C08L2666/04
    • Toughened thermosetting resins comprising thermosetting resins and rubber particles having an average particle size in the range of 20 to 500nm. The toughened resins are obtained by mixing a fully vulcanized powdery rubber having an average particle size in the range of 20 to 500nm with thermosetting resin prepolymers and then curing them. The toughened thermosetting resins comprise rubber phases having a small, uniform and stable particle size, which results in a very significant toughening effect, especially when crazes rapidly grow (as in a standard Izod impact test). The toughened thermosetting resins are excellent in impact resistance, strength, modulus and heat resistance, and when appropriately toughened, the thermosetting resins can be enhanced in terms of impact strength, glass transition temperature and heat distortion temperature. The toughened thermosetting resins are useful for many application areas and the method for preparing the same can be carried out in a simple and easy manner and is suitable for toughening various thermosetting resins.
    • 包含热固性树脂和平均粒径在20至500nm范围内的橡胶颗粒的增韧的热固性树脂。 增韧树脂通过将平均粒度在20-500nm范围内的完全硫化的粉末橡胶与热固性树脂预聚物混合,然后固化而得到。 增韧的热固性树脂包括具有小的,均匀和稳定的粒度的橡胶相,这导致非常显着的增韧效果,特别是当快速生长时(如在标准艾佐德冲击试验中)。 增韧的热固性树脂的耐冲击性,强度,模量和耐热性优异,并且在适当增韧时,可以在冲击强度,玻璃化转变温度和热变形温度方面提高热固性树脂。 增韧的热固性树脂可用于许多应用领域,并且其制备方法可以简单和容易地进行,并且适合于增韧各种热固性树脂。
    • 9. 发明申请
    • PROCESS FOR THE PREPARATION OF HIGH PERFORMANCE POLYPROPYLENE
    • 制备高性能聚丙烯的方法
    • US20090326171A1
    • 2009-12-31
    • US12297857
    • 2007-04-20
    • Wenbo SongMeifang GuoJinliang QiaoZhichao YangShijun ZhangLuqiang Yu
    • Wenbo SongMeifang GuoJinliang QiaoZhichao YangShijun ZhangLuqiang Yu
    • C08F2/01C08F4/42
    • C08F110/02C08F10/00C08F110/06Y02P20/52Y10T428/139C08F2/001C08F2500/04C08F2500/15C08F4/6465
    • 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-unifomess 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.
    • 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全同立构规整度的非均匀性 具有较低全同立构规整度的聚合物部分,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。