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    • 7. 发明授权
    • Oil-free elastomeric poly(aryloxyphosphazene) copolymers
    • 无油弹性聚(芳氧基磷腈)共聚物
    • US4179555A
    • 1979-12-18
    • US919888
    • 1978-06-28
    • Tai C. ChengJohn W. FieldhouseArthur E. ObersterDaniel F. Graves
    • Tai C. ChengJohn W. FieldhouseArthur E. ObersterDaniel F. Graves
    • C08G79/00C08G79/02C08G79/04C08J9/10C08L85/00C08L85/02C09D185/00H01B3/30
    • C08J9/10C08G79/025C08L85/02H01B3/30C08J2385/02Y10T428/294
    • Poly(aryloxyphosphazene) copolymers are prepared having randomly repeating units represented by the formula: ##STR1## wherein R and R.sup.1 may be the same or different and are selected from the group consisting of monovalent aryl radicals and substituted aryl radicals having the structure: ##STR2## wherein X is a substituent selected from the group consisting of alkyl, alkoxy, aryl, aryloxy, amino and halogen substituted on any sterically permissible position on the phenyl group; and wherein the amount of Cl present in the form of P--C1 bonds is from about 0.4 percent to about 10 percent by weight based upon the total weight of copolymer.The copolymers may contain minor proportions of randomly distributed units in addition to the repeating units described above, these additional units containing reactive sites enabling the properties of the copolymers to be modified by crosslinking and/or curing.The copolymers are elastomeric even in the absence of low molecular weight polyphosphazene oils. The copolymers are curable by a variety of curing agents such as sulfur and peroxides, and can also be cured by radiation and ultraviolet light. The copolymers may be utilized in various applications such as foams and coatings, and are particularly suited for use in wire coating formulations.
    • 制备具有由下式表示的无规重复单元的聚(芳氧基磷腈)共聚物:其中R和R 1可以相同或不同,并且选自具有以下结构的一价芳基和取代的芳基:其中X是选自烷基,烷氧基,芳基,芳氧基,氨基和在苯基上的任何空间上允许的位置上取代的卤素的取代基; 并且其中以P-C1键形式存在的Cl的量为基于共聚物总重量的约0.4重量%至约10重量%。 除了上述重复单元之外,共聚物可以含有少量的随机分布的单元,这些含有能够通过交联和/或固化来改性共聚物性质的反应性位点的这些附加单元。 即使在不存在低分子量聚磷腈油的情况下,共聚物也是弹性体。 共聚物可通过各种固化剂如硫和过氧化物固化,并且还可以通过辐射和紫外光固化。 共聚物可以用于各种应用中,例如泡沫和涂料,并且特别适用于丝线涂布配方。