Process for producing phosphazene compound
AssigneeEthyl Corporation
InventorJames T. F. Kao
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Abstract
A process for manufacture of phosphazene compounds in a liquid aliphatic hydrocarbon reaction medium providing process advantages by reacting therein an alkali metal alkoxide, phenoxide or thiol derivative with a phosphonitrilic halide.
Claims8
A process for the manufacture of phosphazene compounds consisting essentially of reacting alkali metal alkoxide having from 1 to about 6 carbon atoms or alkali metal phenoxide with a phosphonitrilic halide at from about 70.degree. to about 150.degree.C in a reaction medium consisting essentially of a liquid paraffinic hydrocarbon and an inert chloroaromatic hydrocarbon solvent.
A process for the manufacture of phosphazene compounds consisting essentially of reacting an alkali metal alkoxide having from 1 to about 6 carbon atoms or alkali metal phenoxide with a phosphonitrilic halide at from about 70.degree. to about 150.degree.C, said process being further characterized by providing said alkali metal alkoxide or phenoxide in a liquid aliphatic hydrocarbon reaction medium and providing said phosphonitrilic halide in an aromatic halohydrocarbon reaction medium.
A process for the manufacture of phosphazene compounds which consists essentially of:
- a. forming a slurry of an alkali metal alkoxide or phenoxide by reacting an alkali metal with an alcohol having from 1 to about 6 carbon atoms or phenol in a liquid paraffinic hydrocarbon reaction medium;
- b. forming a solution of a phosphonitrilic halide in an inert liquid chloroaromatic hydrocarbon solvent;
- c. intermixing said slurry and said solution at from about 70.degree. to about 150.degree.C whereby a phosphazene product and alkali metal halide by-product are formed in the reaction mixture which comprises the liquid paraffinic hydrocarbon and the inert liquid chloroaromatic hydrocarbon solvent;
- d. separating the alkali metal halide by-product from the reaction mixture;
- e. separating the reaction mixture from the phosphazene;
- and
- f. separating the reaction mixture into liquid paraffinic hydrocarbon for recycle to (a) and inert liquid chloroaromatic solvent for recycle to (b).
Dependencies are inferred from the claim text.