Unsymmetrical azonitriles
    1.
    发明授权
    Unsymmetrical azonitriles 失效
    不对称的氮化物

    公开(公告)号:US4039527A

    公开(公告)日:1977-08-02

    申请号:US513846

    申请日:1974-10-10

    CPC分类号: C09B62/0061 C07C255/65

    摘要: Unsymmetrical azonitriles of the formula, ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently straight- or branched-chain alkyl having 1 to 7 carbon atoms or alkoxy substituted straight- or branched-chain alkyl having 2 to 11 carbon atoms but at least one of R.sup.1 and R.sup.2 and at least one of R.sup.3 and R.sup.4 must be different, have good efficiency as initiator for polymerizations or copolymerizations of vinyl monomers. These unsymmetrical azonitriles can be prepared by oxidizing a corresponding unsymmetrical hydrazo compound.

    摘要翻译: 其中R1,R2,R3和R4独立地是具有1至7个碳原子的直链或支链烷基或具有2至11个碳原子的烷氧基取代的直链或支链烷基,但在 R 1和R 2中的至少一个以及R 3和R 4中的至少一个必须不同,作为乙烯基单体的聚合或共聚的引发剂具有良好的效率。 可以通过氧化相应的不对称羟基化合物来制备这些不对称的氮杂芳族化合物。