知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

33 records (took 0.017 seconds)

    Impact modifier for a polymer composition and method for preparing the same
    14.
    发明授权
    Impact modifier for a polymer composition and method for preparing the same 有权
    聚合物组合物用抗冲改性剂及其制备方法

    公开(公告)号：US07541401B2

    公开(公告)日：2009-06-02

    申请号：US11323646

    申请日：2005-12-28

    Applicant: Han Su Lee ,  Byeong Do Lee ,  Sung Sig Min ,  Byung Choon Lee

    Inventor： Han Su Lee ,  Byeong Do Lee ,  Sung Sig Min ,  Byung Choon Lee

    IPC: C08K5/5419 ,  C08G77/442

    CPC classification number: C08F285/00

    Abstract: Disclosed herein is an impact modifier for a polymer composition and a method of preparing the same. The impact modifier includes a core comprising a polyorganosiloxane, an acrylate polymer and a styrenic polymer; and a shell generally surrounding the core, the shell comprising a polymer attached to the core. The method includes providing a silicone rubber particle; adding a polymerizable styrenic compound into the silicone rubber particle; polymerizing the polymerizable styrenic compound within the particle to provide a styrenic polymer; adding a polymerizable acrylic compound into the silicone rubber particle; polymerizing the polymerizable acrylic compound within the silicone rubber particle to provide an acrylate polymer; and grafting a polymerizable compound onto the silicone rubber particle to provide a shell substantially surrounding the silicone rubber particle comprising the styrenic polymer and the acrylate polymer.

    Abstract translation: 本文公开了一种聚合物组合物的抗冲改性剂及其制备方法。 抗冲击改性剂包括包含聚有机硅氧烷，丙烯酸酯聚合物和苯乙烯聚合物的核心; 以及通常围绕所述芯的外壳，所述壳包含附着到所述芯的聚合物。 该方法包括提供硅橡胶颗粒; 将可聚合苯乙烯化合物加入到硅橡胶颗粒中; 在颗粒内聚合可聚合的苯乙烯化合物以提供苯乙烯聚合物; 将可聚合的丙烯酸化合物加入到硅橡胶颗粒中; 在硅橡胶颗粒内聚合可聚合丙烯酸化合物以提供丙烯酸酯聚合物; 并将可聚合化合物接枝到硅橡胶颗粒上以提供基本上围绕包含苯乙烯聚合物和丙烯酸酯聚合物的硅橡胶颗粒的外壳。

    Method of preparing synthetic rubber latex having a large particle size
    15.
    发明授权
    Method of preparing synthetic rubber latex having a large particle size 有权
    制备粒径大的合成橡胶胶乳的方法

    公开(公告)号：US06656999B1

    公开(公告)日：2003-12-02

    申请号：US09699311

    申请日：2000-10-27

    Applicant: Byeong-Do Lee ,  Sang-Dong Park ,  Young-Sun Jun ,  Kwang-Yeol Lim ,  Sang-Kyu Park

    Inventor： Byeong-Do Lee ,  Sang-Dong Park ,  Young-Sun Jun ,  Kwang-Yeol Lim ,  Sang-Kyu Park

    IPC: C08L2904

    CPC classification number: C08C1/07

    Abstract: The present invention provides a method of preparing a synthetic rubber latex having a large particle size, showing good stability and reducing coagulum during polymerization, which comprises (a) pretreating a seed synthetic rubber latex by mixing the seed synthetic rubber latex with deionized water and a small amount of an emulsifier and stirring, (b) preparing an agglomerating latex with a pH value of about 5.0˜8.0 by mixing a copolymer latex containing unsaturated acid having from about 10 to about 50% by weight of solid content with deionized water and a pH controlling agent, and (c) adding the pretreated seed synthetic rubber latex of step (a) to the agglomerating latex of step (b). The step (c) may be carried out by adding the pretreated seed synthetic rubber latex dropwisely to the agglomerating latex containing unsaturated acid for about 30 minutes to about 1 hour.

    Abstract translation: 本发明提供一种制备具有大粒径的合成橡胶胶乳的方法，在聚合过程中显示良好的稳定性和减少凝结物，其包括（a）通过将种子合成橡胶胶乳与去离子水和 少量的乳化剂并搅拌，（b）通过将含有约10至约50重量％的固体含量的不饱和酸与去离子水和一种不饱和酸的共聚物胶乳混合，制备pH值为约5.0〜8.0的凝聚胶乳 pH控制剂，和（c）将步骤（a）的预处理种子合成橡胶胶乳加入到步骤（b）的聚集胶乳中。 步骤（c）可以通过将预处理的种子合成橡胶胶乳滴加到含有不饱和酸的聚集胶乳中约30分钟至约1小时来进行。

Patent Agency Ranking