Process for preparing bis(pentaerythritol phosphate alcohol) alk

Details Process for preparing bis(pentaerythritol phosphate alcohol) alk Process for preparing bis(pentaerythritol phosphate alcohol) alk

1994-08-30

1996-01-23

Reamer, James H.

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

Organic compounds

Phosphorus esters

C07F 902

Patent

active

054866391

ABSTRACT:
A bis(pentaerythritol phosphate alcohol) alkylphosphonate compound, such as one comprising an alkyl group of from about one to four carbon atoms, preferably bis(pentaerythritol phosphate alcohol) methylphosphonate, is a flame retardant compound. Such a compound can be prepared by the transesterification of a diphenyl alkyl phosphonate carrying the desired alkyl group with pentaerythritol phosphate alcohol. An alternative process of preparation comprises the reaction of pentaerythritol phosphate alcohol, a trialkylamine, and an alkylphosphonic dihalide.

REFERENCES:
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patent: 3883478 (1975-05-01), Gresham
patent: 4152373 (1979-05-01), Honig et al.
patent: 4801625 (1989-01-01), Parr et al.
patent: 5235085 (1993-08-01), Telschow et al.
patent: 5237085 (1993-08-01), Telschow et al.
J. Org. Chem. vol. 42, No. 2 (1977) pp. 379-381.

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