PROCESS FOR PREPARING PHOSPHONITRILE COMPOUND HAVING SUBSTITUTED HYDROXYL GROUP

摘要

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 in the presence of a tertiary amine of a specific amount relative to the alcohol 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-C?, 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 alcohol while supplying ammonia in a specific amount ratio or more relative to the amount of said active chlorine which has been originally contained in said phosphonitrile chloride oligomer into the reaction system, thereby substantially completely and substituting said remaining active chlorine by a substituted hydroxyl group.