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    • 5. 发明授权
    • Inhibition of polymerization of unsaturated monomers
    • 抑制不饱和单体的聚合
    • US06653414B2
    • 2003-11-25
    • US09916580
    • 2001-07-30
    • Brigitte BenageBrendan J. GeelanGerald J. AbruscatoLeo Bonnell
    • Brigitte BenageBrendan J. GeelanGerald J. AbruscatoLeo Bonnell
    • C08F238
    • C07C7/20C07B63/04C07C15/44C07C15/46
    • Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of a mixture comprising: A) at least one stable hindered nitroxyl compound having the structural formula: wherein R1 and R4 are independently selected from the group consisting of hydrogen, alkyl, and heteroatom-substituted alkyl and R2 and R3 are independently selected from the group consisting of alkyl and heteroatom-substituted alkyl; and X1 and X2 (1) are independently selected from the group consisting of halogen, cyano, COOR7, —S—COR7, —OCOR7, (wherein R7 is alkyl or aryl), amido, —S—C6H5, carbonyl, alkenyl, or alkyl of 1 to 15 carbon atoms, or (2) taken together, form a ring structure with the nitrogen; and B) at least one inhibitor selected from the group consisting of ortho-quinone, ortho-hydroquinone, para-quinone, para-hydroquinone, and derivatives of the foregoing.
    • 本文公开了一种抑制烯属不饱和单体过早聚合的方法,包括向所述单体中加入有效量的混合物,所述混合物包含:A)至少一种具有以下结构式的稳定的受阻硝酰基化合物:其中R1和R4独立地选自 由氢,烷基和杂原子取代的烷基组成的基团,且R 2和R 3独立地选自烷基和杂原子取代的烷基; 和X 1和X 2(1)独立地选自卤素,氰基,COOR 7,-S-COR 7,-OCOR 7,(其中R 7是烷基或芳基),酰氨基,-S-C 6 H 5,羰基,烯基或 1〜15个碳原子的烷基,或(2)一起与氮形成环结构; 和B)选自邻醌,邻 - 氢醌,对醌,对 - 氢醌和前述衍生物中的至少一种抑制剂。