Method for preparing asymmetric radial copolymers having four first arms
and two second arms
    1.
    发明授权
    Method for preparing asymmetric radial copolymers having four first arms and two second arms 失效
    制备具有四个第一臂和两个第二臂的不对称径向共聚物的方法

    公开(公告)号:US5369175A

    公开(公告)日:1994-11-29

    申请号:US149598

    申请日:1993-11-09

    摘要: A method for preparing asymmetric radial polymers wherein the different polymeric arms are contacted sequentially with a coupling agent. The method narrows the relative arm distribution of the several asymmetric radial polymers produced and significantly increases the amount of total product having the desired ratio of polymeric arms. Any coupling agent known in the prior art to be useful in the production of asymmetric radial polymers may be used in the method of this invention but coupling agents having from three to about twelve functional groups are most effective.

    摘要翻译: 一种制备不对称辐射聚合物的方法,其中不同的聚合物臂与偶联剂依次接触。 该方法缩小了所生产的几种不对称径向聚合物的相对臂分布,并显着增加了具有所需聚合物臂比例的总产物的量。 现有技术中已知的可用于生产不对称径向聚合物的任何偶联剂可用于本发明的方法中,但是具有三个至约十二个官能团的偶联剂也是最有效的。