NOVEL MULTIFUNCTIONAL AZO INITIATORS FOR FREE RADICAL POLYMERIZATIONS: METHODS OF PREPARATION
    9.
    发明申请
    NOVEL MULTIFUNCTIONAL AZO INITIATORS FOR FREE RADICAL POLYMERIZATIONS: METHODS OF PREPARATION 审中-公开
    用于自由放射聚合的新型多功能AZO引发剂:制备方法

    公开(公告)号:US20100204361A1

    公开(公告)日:2010-08-12

    申请号:US12367984

    申请日:2009-02-09

    IPC分类号: C08J3/02 C09B29/00

    摘要: The invention provides compositions of matter, methods of their synthesis, and methods of their use in polymerization reactions. The compositions include polyfunctional initiators used to make star polymers when polymerized with monomers. The polyfunctional initiators are synthesized out of a multifunctional core with at least two functional groups and two or more initiator units bonded to the functional groups. The initiator units have two electron-withdrawing groups bonded to a central carbon atom and an azo group between the central carbon atom and the functional group. The polyfunctional initiators are particularly effective because when they decompose to form the radical core of a star polymer, the electron-withdrawing groups prevent the corresponding radical from forming any linear polymer contamination and only desired star polymers result.

    摘要翻译: 本发明提供了物质组合物,其合成方法及其在聚合反应中的应用。 组合物包括当用单体聚合时用于制备星形聚合物的多官能引发剂。 多功能引发剂由具有至少两个官能团的多官能核心和与官能团结合的两个或更多个引发剂单元合成。 引发剂单元具有与中心碳原子键合的两个吸电子基团和中心碳原子和官能团之间的偶氮基团。 多官能引发剂是特别有效的,因为当它们分解形成星形聚合物的自由基核心时,吸电子基团阻止相应的自由基形成任何线性聚合物污染,并且仅产生所需的星形聚合物。