PROCESS FOR THE PREPARATION OF PHOSPHONITRILE CHLORIDE OLIGOMER

摘要

: 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 with ammonium chloride in an inert organic solvent, wherein a catalytic amount of a compound selected from the group consisting of quinoline, isoquinoline and their derivatives represented by the general formula: < IMG > wherein R stands for an alkyl group or a halogen atom and n stands for zero or an integer of 1 to 7, and pyridine derivatives represented by the general formula: < IMG > wherein Q stands for a halogen atom or a hydroxyl group; R' stands for an alkyl group; m stands for an integer of 1 to 5 and p stands for zero or an integer of 1 to 4 with the proviso that the total number of m and p is from 1 to 5, and a catalytic amount of a polyvalent metal compound are present in the reaction system.