Process for the formation of hydrocarbyl bis(hydrocarbyl phospha

Details Process for the formation of hydrocarbyl bis(hydrocarbyl phospha Process for the formation of hydrocarbyl bis(hydrocarbyl phospha

1996-07-29

1998-05-12

Ambrose, Michael G.

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

Organic compounds

Phosphorus esters

C07F 912

Patent

active

057507562

ABSTRACT:
A process for forming a composition containing over, for example, about 90% by weight of an alkylene-arylene bridging group-containing bis(diphenyl phosphate) compound and less than, for example, 10%, by weight, of monophosphate by-product. This process involves the reaction of a composition containing a diphenyl halophosphate and an alkylene-arylene bridging group-containing diol, in the presence of a catalytic amount of a Lewis acid catalyst, utilizing a means, during the course of the reaction, for removal of hydrohalide by-product. The preferred means that are used for removal of hydrohalide by-product include:

REFERENCES:
patent: 3254973 (1966-06-01), Giammaria et al.
patent: 3642959 (1972-02-01), Nichols
patent: 4133846 (1979-01-01), Albright
patent: 4343732 (1982-08-01), Zama et al.
patent: 5122556 (1992-06-01), Kambour
patent: 5457221 (1995-10-01), Brady et al.
Derwent Patent Abstract 05192 J/49 (1982), abstracting Japanese Patent Publication No. 57/174,331.

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