Process for preparing halogenated trialkyl phosphate esters

Details Process for preparing halogenated trialkyl phosphate esters Process for preparing halogenated trialkyl phosphate esters

C - Chemistry, Metallurgy

07

F

260/461.4

C07F 9/09 (2006.01)

Patent

CA 1284999

ABSTRACT A method of producing a halogenated trialkyl phosphate ester which comprises admixing a halogenated hydroxy compound containing a halogen selected from the group consisting of bromine, chlorine, iodine and mixtures thereof, a phosphorus oxyhalide containing a halogen selected from the group consisting of bromine, chlorine, iodine and mixtures thereof, a solvent suit- able to dissolve the halogenated hydroxy compound and the phosphorus oxyhalide, said solvent being substan- tially inert to hydrogen halide, and a catalyst suit- able to increase the polarity of the phosphorus oxy- halide, refluxing said admixture sufficiently to form a trialkyl phosphate ester precipitate, and recovering this precipitate.

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