Distillation process for purification of triaryl phosphate...

Details Distillation process for purification of triaryl phosphate... Distillation process for purification of triaryl phosphate...

B - Operations, Transporting

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202/79

B01D 3/06 (2006.01) B01D 3/04 (2006.01) C07F 9/02 (2006.01) C07F 9/12 (2006.01)

Patent

CA 1049443

ABSTRACT: Crude phosphate ester products resulting from the phosphorylation of phenol, lower alkyl phenols and mix- tures of same are purified to prepare triaryl phosphates substantially free of unreacted phenols by the sequential steps of flash distillation and fractional distillation under controlled conditions with removal of the phosphate ester product as a liquid underflow.

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