Synthesis method for polydimethylketene by friedel-craft cationic polymerization of dimethylketene
    21.
    发明授权
    Synthesis method for polydimethylketene by friedel-craft cationic polymerization of dimethylketene 失效
    聚二甲基乙烯酮的合成方法,通过二甲基烯酮的乳化法阳离子聚合

    公开(公告)号:US07105615B2

    公开(公告)日:2006-09-12

    申请号:US10534120

    申请日:2003-11-03

    IPC分类号: C08F2/00

    CPC分类号: C08G63/005 C08F4/00

    摘要: The invention concerns a cationic catalyst system comprising an initiator (I), a catalyst (K) and a cocatalyst (CoK). The cocatalyst (CoK) is an agent releasing the active polymerizing center of its counter anion generated by the reaction between the catalyst (K) and the initiator (I). Said cocatalyst is characterized by the existence of a double bond electron-depleted by an electroattractive group. It is selected, for example, from the group consisting of the following complexing agents including o-chloranyl (3,4,5,6-tetrachloro-1,2-benzoquinone), p-chloranyl (2,3,5,6-tetrachloro-1,4-benzoquinone), nitrobenzene, trinitrobenzene, or tetracyanoethylene.

    摘要翻译: 本发明涉及包含引发剂(I),催化剂(K)和助催化剂(CoK)的阳离子催化剂体系。 助催化剂(CoK)是释放由催化剂(K)和引发剂(I)之间的反应产生的其抗衡阴离子的活性聚合中心的试剂。 所述助催化剂的特征在于存在由电吸收基团电子耗尽的双键。 例如可以选自以下络合剂:邻氯苯基(3,4,5,6-四氯-1,2-苯醌),对氯苯基(2,3,5,6-四氢 - 四氯-1,4-苯醌),硝基苯,三硝基苯或四氰基乙烯。