Process for preparing high cyclic phosphonitrilic halides

Details Process for preparing high cyclic phosphonitrilic halides Process for preparing high cyclic phosphonitrilic halides

C - Chemistry, Metallurgy

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B

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C01B 25/00 (2006.01) C01B 21/097 (2006.01) C01B 21/098 (2006.01)

Patent

CA 1082878

PROCESS FOR PREPARING HIGH CYCLIC PHOSPHONITRILIC HALIDES Abstract of the Disclosure Preparation of high cyclic phosphonitrilic halide, preferably chloride, oligomer mixtures by reaction of phosphorus trichloride, chlorine and ammonia at temperatures from 65 to 180°C in which the reactants are simultaneously fed to an agitated inert solvent at a rate such that the phosphorus trichloride concentration is at most stoichiometric relative to the chlorine and ammonia concentration and such that petroleum ether insoluble phosphonitrilic chloride formation is suppressed, and recovering the cyclic phosphonitrilic halide oligomer mixture without extracting petroleum ether insoluble materials since these are not produced.

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