| 摘要 |
[PROBLEMS] To provide a process for producing a cyclic and/or linear phosphonitrilic acid ester from a cyclic and/or linear phosphonitrile dichloride, in which a phosphonitrilic acid ester being extremely low in monochloro form content can be produced within a shortened reaction time. [MEANS FOR SOLVING PROBLEMS] In the reaction of the above phosphonitrile dichloride with a metal arylolate and/or metal alcoholate in the presence of a reaction solvent, use is made of a metal arylolate and/or metal alcoholate containing at least two types of metals differing from each other in ionization energy, and a specified compound is used as a catalyst. |
