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    • 4. 发明公开
    • INHIBITION OF POLYMERIZATION OF UNSATURATED MONOMERS
    • 不饱和单体聚合的抑制
    • EP1248757A1
    • 2002-10-16
    • EP00983901.0
    • 2000-12-05
    • Uniroyal Chemical Company, Inc.
    • BENAGE, BrigitteEISENSTEIN, Andrew, J.
    • C07B63/04C07C7/20C07C15/46C09K15/30
    • C07B63/04C07C7/20C07C15/46
    • Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of: A) at least one stable hindered nitroxyl compound having the structural formula (I) 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 phenylenediamine, and, optionally, C) at least one nitroaromatic compound.
    • 本文公开了抑制烯键式不饱和单体过早聚合的方法,其包括向所述单体中加入有效量的:A)至少一种具有结构式(I)的稳定的位阻硝酰基化合物,其中R 1和R 4独立地选自 由氢,烷基和杂原子取代的烷基组成并且R 2和R 3独立地选自由烷基和杂原子取代的烷基组成的组; 和X1和X2(1)独立地选自卤素,氰基,COOR7,-S-COR7,-OCOR7(其中R7为烷基或芳基),酰氨基,-S-C6H5,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)至少一种苯二胺,以及任选的C)至少一种硝基芳族化合物。