Method for the manufacture of dialkylphosphites

Details Method for the manufacture of dialkylphosphites Method for the manufacture of dialkylphosphites

C - Chemistry, Metallurgy

07

F

C07F 9/141 (2006.01)

Patent

CA 2760604

A method for the manufacture of dialkyl phosphites is disclosed wherein a P-O component containing from 1 to 6 P-O-P bonds in the molecule is reacted with an alcohol and a carboxylic acid ester having from 1 to 6 carbon atoms in the alkyl group and from 5 to 20 carbon atoms in the esterifying alkyl group of the ester. The dialkyl phosphites are formed under simultaneous removal by distillation of the carboxylic acid formed.

L'invention concerne un procédé pour produire des phosphites de dialkyle, consistant à faire réagir un composant P-O contenant entre 1 à 6 liaisons P-O-P dans la molécule avec un alcool et un ester de l'acide carboxylique comportant entre 1 à 6 atomes de carbone dans le groupe alkyle et entre 5 et 20 atomes de carbone dans le groupe alkyle d'estérification de l'ester. Les phosphites de dialkyle sont formés lors d'une étape d'élimination simultanée par distillation de l'acide carboxylique formé.

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