Process for preparing liquid triaryl thiophosphate mixtures

Details Process for preparing liquid triaryl thiophosphate mixtures Process for preparing liquid triaryl thiophosphate mixtures

1986-05-15

1988-02-09

Sutto, Anton H.

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

Organic compounds

Phosphorus esters

558 92, 558211, 252609, C07F 9165

Patent

active

047242655

ABSTRACT:
Liquid mixed triaryl thiophosphate mixtures can be prepared by forming a mixture of phenol and substituted phenols, forming a phosphite from that mixture and sulfurizing the phosphite, washing the thiophosphate with aqueous base, and drying the so washed thiophosphate under mild conditions. The products are liquid while containing at least 25 percent symmetrical triaryl thiophosphate. Colorless and odorless products are prepared.

REFERENCES:
patent: 2250049 (1941-07-01), Moyle
patent: 3829565 (1974-08-01), Kishino et al.
patent: 3839510 (1974-10-01), Kudamatsu et al.

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