PROCESS FOR OBTAINING BIS (2,4-DI-TERT-BUTYLPHENYL) HALOPHOSPHITES

摘要

The invention relates to a process for obtaining phosphorous acid-bis-(2,4-di-tert-butyl-phenyl) ester halides of formula (1), in which a phosphorous acid-2,4-di-tert-butyl-phenyl ester dihalide of formula (II) is heated in the presence of a compound containing nitrogen and/or phosphorus and acting as a catalyst to 130 280.degree.C and removing the phosphorus trihalide produced by disproportionation from the reaction mixture.