Di-o-biphenylyl diphenyl bisphenol a bis phosphate and process

Claim 1

A PROCESS FOR PREPARING A NEUTRAL PHOSPHORUSCONTAINING ESTER WHICH COMPRISES TRANSESTERIFYING AT LEAST 1 ARYL RADICAL OF PHOSPHORUS-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRIARY PHOSPHATES AND TRIARYL PHOSPHOROTHIONATES, WHEREIN THE ARYL GROUPS ARE INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF PHENYL, NAPTHYL, ALKYLARYL HAVING 7 TO 30 CARBON ATOMS, ARYL-PHENYL OF 12 TO 24 CARBON ATOMS, ARYLALKYL-PHENYL OF 13 TO 25 CARBON ATOMS, AND SUBSTITUTED FORMS OF SUCH ARYLS WHEREIN THE SUBSTITUENTS ARE SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE, IODINE AND FLUORINE, WITH A TRANSESTERIFYING COMPOUND WHICH IS A MONOHYDRIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKANOLS OF 1 TO 30 CARBON ATOMS, ARYLALKANOLS OF 7 TO 30 CARBON ATOMS, AND ALKANOLS OF 2 TO 12 CARBON ATOMS, AND SUBSTITUTED ALKANOLS, WHEREIN THE SUBSTITUENTS IS LOWER ALKOXYPHENYL, AND SUBSTITUTED PHENOL WHEREIN THE SUBSTITUENTS ARE SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL, PHENYL, BENZYL, NITRO AND CHLORINE, IN PRESENCE OF AN EFFECTIVE AMOUNT, FROM 0.001 PART OF 0.5 PART PER PART OF PHOSPHORUS IN THE PHOSPHORUS-CONTAINING REACTANT, OF STRONGLY BASIC CATALYST FOR THE REACTION, AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 80* TO ABOUT 300*C., RECOVERING A NEUTRAL PHOSPHORUS-CONTAINING ESTER.