Perfluoro-keto-ylids as precursors of polychloroketones, 1,2- diketones and quinoxalines

摘要

The invention relates to a novel fluorinated pre-polymer and novel process steps in producing the same. The pre-polymers are quinoxaline materials derived by reaction of diketone linkage containing perfluoro- compounds with an aromatic diamine. The diketone is produced by a bis- ketone. The polychloroketone is produced by reacting a keto- ylid with a chlorinating agent, e.g., chlorine. The keto-ylid is produced by oxidatively dechlorinating a polychloroketone which may be a monoketone or reacting a phosphorane with an acid halide of a polyoxy- perfluoroalkylene oxide wherein the perfluoro-oxyalkylene group contains two or three carbon atoms, and there are present from two or twenty perfluoro-oxyalkylene units in the oligomer. The quinoxalines, the polychloroketones and the diketones hereof are novel products. Cross- linking may be effected with a free radical generator.