Substantially pure cyclic phosphonitrilic chloride trimer

Details Substantially pure cyclic phosphonitrilic chloride trimer Substantially pure cyclic phosphonitrilic chloride trimer

1979-12-31

1981-03-31

Carter, Herbert T.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Halogen containing

C01B 2510

Patent

active

042593050

ABSTRACT:
A method for the separation of phosphonitrilic chloride trimer from mixtures containing other higher cyclic and linear phosphonitrilic chlorides involves contacting the crude phosphazene mixture with a ketone and preferably in the presence of a solvent and water so that a separable liquid fraction whose phosphazene constituent consists essentially of cyclic phosphonitrilic chloride is formed. The fraction is then separated and the trimer easily isolated by known methods in the art.

REFERENCES:
patent: 2862799 (1958-12-01), Dittmar et al.
patent: 3008799 (1961-11-01), Paddock et al.
patent: 3378353 (1968-04-01), Hands
patent: 3379510 (1968-04-01), Jaszka
patent: 3677720 (1972-07-01), Maund et al.
Chemical Abstract 159648d.

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