Phosphonitrilic chloride trimer purification

Details Phosphonitrilic chloride trimer purification Phosphonitrilic chloride trimer purification

C - Chemistry, Metallurgy

01

B

23/77

C01B 21/098 (2006.01)

Patent

CA 1228712

ABSTRACT PHOSPHONITRILIC CHLORIDE TRIMER PURIFICATION Polymer-grade cyclic phosphonitrilic chloride trimer can be obtained from crude cyclic po1yphospho- nitrilic chlorides by forming a solution of the crude cyclics, water washing the solution, distilling solvent to form a hot concentrate, cooling to form a precipitate and distilling the precipitate to form polymer-grade trimer.

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