Process for the preparation of phosphonitrile chloride oligomer

Details Process for the preparation of phosphonitrile chloride oligomer Process for the preparation of phosphonitrile chloride oligomer

C - Chemistry, Metallurgy

01

B

23/77

C01B 21/098 (2006.01)

Patent

CA 1224326

TITLE OF THE INVENTION Process for the preparation of phosphonitrile chloride oligomer ABSTRACT OF THE DISCLOSURE A process for the preparation of phosphonitrile chloride oligomer, particularly, phosphonitrile chloride trimer at a high yield while suppressing the by-production of phosphonitrile chloride tetramer by reacting phosphorus pentachloride and ammonium chloride in an inert organic solvent under the presence of a polyvalent metal compound catalyst, wherein a catalytic amount of a compound selected from the group consisting of pyridine and alkyl-substituted pyridine derivatives capable of forming chloropyridinium salts in reaction with phosphorus pentachloride is present in the reaction system. - 1 -

474732

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