Polymerization of phosphonitrilic chloride

摘要

High molecular weight phosphonitrillic chloride polymers that are soluble in benzene, toluene and tetrahydrofuran, tetrameric phosphonitrilic chloride, or mixtures thereof at elevated temperatures in the presence of a catalytic amount of an aprotic Lewis acid halogen acceptor. For example, soluble high molecular weight phosphonitrillic chloride can be made by heating the aforementioned trimer at 220 DEG -270 DEG C. in the presence of 5-1000 ppm of AlCl3.