申请人:——
公开号:US04316035A1
公开(公告)日:1982-02-16
Fluorinated alkyl or alkylether 1,2,4-oxadiazole compounds are prepared by cyclizing the corresponding alkyl or alkylether imidoylamidoximes in vacuo or in an inert atmosphere at a temperature within the range of 40.degree. to 100.degree. C. for a period of 8 to 144 hours in the presence of an acid compound which can accept ammonia to form a salt. The imidoylamidoximes usable in this process may be either polymeric or nonpolymeric. The products, when polymeric, have excellent heat, chemical and solvent resistance.
氟化烷基或烷基醚1,2,4-噁二唑化合物是通过在真空或惰性气氛下,在40℃至100℃范围内,在存在能够接受氨形成盐的酸性化合物的条件下,将相应的烷基或烷基醚亚氨基肟环化8至144小时制备而成。可用于此过程的亚氨基肟可为聚合物或非聚合物。当产品为聚合物时,具有优异的耐热性、耐化学性和耐溶剂性。