Process for preparing mixed phosphate ester compositions

Details Process for preparing mixed phosphate ester compositions Process for preparing mixed phosphate ester compositions

1975-05-05

1977-07-05

Raymond, Richard L.

Chemistry of carbon compounds

Dipeptides, e.g., aspartame, anserine, carnosine, etc.

260963, 260974, 260975, C07F 911, C07F 912

Patent

active

040340236

ABSTRACT:
Preparing mixed phosphate ester compositions consisting essentially of 10% to 19% tributyl phosphate, 62% to 80% dibutyl phenyl phosphate, and 10% to 19% butyl diphenyl phosphate which comprises forming a first reaction product by reacting phosphorus oxychloride with phenol in a molar ratio of 1:0.8 to 1.0 until less than 1% unreacted phenol is present in the reaction mixture, reacting the first reaction product with excess n-butanol at a temperature below 35.degree. C to prepare a crude mixed phosphate ester composition comprising tributyl phosphate, dibutyl phenyl phosphate and butyl diphenyl phosphate, and purifying the crude composition leaving a substantially pure mixed phosphate ester composition.

REFERENCES:
patent: 2504121 (1950-04-01), Gamrath
patent: 2596141 (1952-05-01), Gamrath et al.
patent: 2929833 (1960-03-01), Orloff et al.
Houben-Weyl, Methoden der Organischen Chemie, vol. 12/2 (1964) pp. 215, 216, 242, 310, 311 and 325-332.

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