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    Preparation of emulsion homo- and copolymers and device therefore
    2.
    发明授权
    Preparation of emulsion homo- and copolymers and device therefore 失效
    因此制备乳液均聚物和共聚物和装置

    公开(公告)号：US06660814B1

    公开(公告)日：2003-12-09

    申请号：US08940996

    申请日：1997-09-30

    申请人： Huberrus Kröner ,  Wolfgang Klanig ,  Bradley Ronald Morrison ,  Rainer Klostermann ,  Holger Schöpke ,  Walter Kastenhuber

    发明人： Huberrus Kröner ,  Wolfgang Klanig ,  Bradley Ronald Morrison ,  Rainer Klostermann ,  Holger Schöpke ,  Walter Kastenhuber

    IPC分类号： C08F200

    CPC分类号： B01J19/1881 ,  C08F2/22 ,  Y10S526/92 ,  Y10S526/922

    摘要： In the process and a correspondingly appropriate device for preparing homo- or copolymers of at least one of the, polymerizable monomers of the group consisting of styrene, butadiene, vinyl chloride, vinyl acetate, vinylidene chloride, alkyl (meth)acrylatc (meth)acrylic acid, (meth)acrylonitrile and (meth)acrylamide reaction is carried out at at least 40° C. in the presence of a dispersing auxiliary and of a free-radical polymerization initiator such that at least 85% by weight of the polymer is formed from these monomers. In the multistage process the procedure is such that a) in a first stage water is added as a solvent which is inert in the reaction and dispersing auxiliaries, seed and a first portion of monomer(s) are added if desired, b) in a second stage initiator is added, and c) in a third stage the remainder or all of the monomer(s) is added directly or in emulsion form and in the presence of further water and, if desired, further dispersing auxiliary or other auxiliaries, it also being possible to operate any two of the stages as a single stage. The reaction mixture, which is in emulsion form, is moved in all or some stages through an external circuit which leads from and back to the reaction vessel (2) and comprises at least one low-shear pump (7) and at least one heat exchanger (8) having an essentially laminar flow profile. The products prepared by this process, which involves short preparation times, have good performance properties (for adhesive bonds, for example).

    摘要翻译： 在该方法中以及用于制备苯乙烯，丁二烯，氯乙烯，乙酸乙烯酯，偏二氯乙烯，（甲基）丙烯酸（甲基）丙烯酸烷基酯，（甲基）丙烯酸烷基酯（甲基）丙烯酸烷基酯中的至少一种可聚合单体的均聚物或共聚物的相应适当的装置 酸，（甲基）丙烯腈和（甲基）丙烯酰胺反应在分散助剂和自由基聚合引发剂的存在下在至少40℃下进行，使得形成至少85重量％的聚合物 来自这些单体。 在多级方法中，a）在第一阶段中加入水作为在反应中为惰性的溶剂，并且分散助剂，如果需要，加入种子和第一部分单体，b）在第二阶段 并且c）在第三阶段中，剩余或全部单体直接或以乳液形式加入，并且在另外的水的存在下，如果需要，还可以分散辅助剂或其它助剂，它也是 可以将任何两个阶段操作为单一阶段。乳液形式的反应混合物通过从反应容器（2）引出并返回到反应容器（2）的外部回路在所有或某些阶段中移动，并且至少包括 一个低剪切泵（7）和至少一个具有基本层流轮廓的热交换器（8）。 通过该方法制备的产品，其制备时间短，具有良好的性能（例如粘合剂粘合）。