Process for making solid polyhalotriaryl phosphate esters

Details Process for making solid polyhalotriaryl phosphate esters Process for making solid polyhalotriaryl phosphate esters

1987-10-07

1990-01-30

Howard, Jacqueline V.

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

Organic compounds

Phosphorus esters

558150, C07F 909

Patent

active

048975028

ABSTRACT:
A process is provided for making halogen-substituted triaryl phosphate esters which are normally solid under ambient conditions. The process comprises reacting a halogenated phenol with phosphorus oxychloride in the presence of a magnesium chloride catalyst above the melting point of the desired product. After the reaction is complete the product is recovered by adding an alcohol, such as, pentanol, 2-ethyl hexanol or hexanol and cooling the resulting mixture below the melting point of the product.

REFERENCES:
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patent: 2561493 (1951-07-01), Caprio et al.
patent: 2894015 (1959-07-01), Kyker
patent: 3436441 (1969-04-01), Thompson
patent: 3526681 (1970-09-01), English
Kirk-Othmer, "Encyclopedia of Chemical Technology", 3rd Ed., vol. 14, John Wiley & Sons, N.Y., (1981), p. 632.
Barton, A. F., CRC Handbook of Solubility Parameters and Other Cohesion Parameters, CRC Press Inc., Boca Raton, (1985), pp. 94-109.
Translation of Japanese Kokai 50-47953, 4/23/75.

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