Production of alkyl phosphites

Details Production of alkyl phosphites Production of alkyl phosphites

1993-03-16

1994-09-06

Morris, Patricia L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus esters

558214, C07F 9142

Patent

active

053449517

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 about 130.degree. to about 138.degree. C., and (b) refluxing the reaction mass during the reaction, wherein the phosphorous acid contains about 20 up to about 35 wt. % water, the molar ratio of alcohol to phosphorous acid used is within the range of from about 2.0:1 to about 4.0:1, and water is removed from the reaction mass essentially as it is formed during steps (b) and (c).

REFERENCES:
patent: 2670368 (1954-02-01), Baker et al.
patent: 3725515 (1973-04-01), Schimmelschmidt et al.

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