Production of alkyl phosphites

Details Production of alkyl phosphites Production of alkyl phosphites

C - Chemistry, Metallurgy

07

F

C07F 9/142 (2006.01) C07F 9/143 (2006.01)

Patent

CA 2114752

PRODUCTION OF ALKYL PHOSPHITES Abstract This invention relates to an improved process for producing diesters of phosphorous acid. The process comprises (a) reacting phosphorous acid with monohydric alcohol in a petroleum distillate solvent while maintaining a reaction mass temperature within the range of from 130° to 138°C, and (b) refluxing the reaction mass during the reaction, wherein the phosphorous acid contains more than 10 up to 35 wt. % water, the molar ratio of alcohol to phosphorous acid used is within the range of from 2.0:1 to 4.0:1, and water is removed from the reaction mass essentially as it is formed during steps (b) and (c).

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