Process for preparing high cyclic phosphonitrilic halides

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

1975-07-03

1980-04-01

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Halogen containing

C01B 2510

Patent

active

041961790

ABSTRACT:
Preparation of high cyclic phosphonitrilic halide, preferably chloride, oligomer mixtures by reaction of phosphorus trichloride, chlorine and ammonia at temperatures from 65.degree. to 180.degree. 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.

REFERENCES:
patent: 3359080 (1967-12-01), Ridgway et al.
patent: 3658487 (1972-04-01), Wunsch et al.
patent: 3780162 (1973-12-01), Bergeron
patent: 3860693 (1975-01-01), Graham

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