Abstract: A process for producing an aryloxy-substituted phosphazene derivative represented by the formula(N.dbd.P).sub.n (OAr).sub.l Cl.sub.m-l R.sup.1.sub.p (III)which comprises reacting a chlorophosphazene derivative represented by the general formula(N.dbd.P).sub.n Cl.sub.m R.sup.1.sub.p (I)with, a hydroxy aryl compound represented by the general formulaHOAr (II)whereR.sup.1 represents hydroxy group, NH.sub.2 group, --OR.sup.4 group, --SR.sup.4 group or ##STR1## group, where R.sup.4, R.sup.5 and R.sup.6 represent independently an alkyl group, an alkenyl group, alkynyl group or an aryl group or one of R.sup.5 or R.sup.6 may be hydrogen or R.sup.5 and R.sup.

Abstract: Various kinds of organophosphazene polymers are produced by reacting dichlorophosphezene polymer with hydroxy compounds using a tertiary amine such as triethyl amine as an acid acceptor in the presence of pyridine derivative such as 4-dimethylaminopyridine as a catalyst under mild reaction conditions to substitute substantially all the chlorine atoms with organic groups.

Abstract: A process for preparing a phosphonitrile compound having a substituted hydroxyl group by making use of a phosphonitrile chloride oligomer and an alcohol as the starting materials, which comprises:(1) a first step of reacting said phosphonitrile chloride oligomer with said alcohol in a specific amount ratio of the active chlorine contained in said phosphonitrile chloride oligomer relative to the alcohol in the presence of a specific amount of a tertiary amine at a specific temperature, thereby substituting a specific amount of said active chlorine by a substituted alkoxy group,(2) a second step of elevating the temperature of the reaction mixture obtained in the first step to a specific temperature to cause a condensation reaction through the elimination of R--Cl, and(3) a third step of adding an alcohol in a specific amount ratio relative to said active chlorine which remains at the stage of completion of the second step, to the reaction system, and making said remaining active chlorine react with said alcoho

Abstract: Phosphonitrile chloride oligomer, particularly, phosphonitrile chloride trimer, is produced in high yield while suppressing the formation of by-product phosphonitrile chloride tetramer, by reacting phosphorus pentachloride with ammonium chloride in an inert organic solvent, in the presence of a catalytic amount of a compound selected from the group consisting of quinoline, isoquinoline and their drivatives represented by the general formulae: ##STR1## 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: ##STR2## 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 of an integer of 1 to 4 with the proviso that the total number of m and p is from 1 to 5,and in the presence of a catalytic amount of a polyvalent metal compound.

Abstract: A process for preparing alkoxyphosphonitrile compounds.

Abstract: 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.

Abstract: A process for completely separating tri(phosphonitrile chloride) from tetra(phosphonitrile chloride) and/or phosphonitrile chloride oligomer which includes vacuum distillation of the phosphonitrile chloride mixture together with an inert mixture of hydrocarbons as solvent.