申请人:THE FIRESTONE TIRE & RUBBER COMPANY
公开号:EP0008607A1
公开(公告)日:1980-03-19
Poly(aryloxyphosphazene) copolymers are prepared having randomly repeating units represented by the formula:
wherein R and R' may be the same or different and are selected from the group consisting of monovalent aryl radicals and substituted aryl radicals having the structure:
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-CI 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.
聚(芳氧基膦)共聚物的无规重复单元由以下式子表示:
其中 R 和 R'可以相同或不同,并选自具有以下结构的单价芳基和取代芳基组成的组:
其中 X 是选自由烷基、烷氧基、芳基、芳氧基、氨基和在苯基上任何立体允许位置上取代的卤素组成的取代基;以 P-CI 键形式存在的 Cl 的量按共聚物总重量计算约为 0.4%至约 10%。
除上述重复单元外,共聚物还可含有少量随机分布的单元,这些额外单元含有反应位点,可通过交联和/或固化改变共聚物的性质。
即使在没有低分子量聚磷腈油的情况下,共聚物也具有弹性。共聚物可通过硫和过氧化物等多种固化剂固化,也可通过辐射和紫外线固化。这种共聚物可用于各种用途,如泡沫和涂料,尤其适用于电线涂料配方。