Process for forming bis(pentaerythritol phosphate) carbonate

Details Process for forming bis(pentaerythritol phosphate) carbonate Process for forming bis(pentaerythritol phosphate) carbonate

1992-07-10

1993-08-10

Reamer, James H.

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

Organic compounds

Phosphorus esters

C07F 915

Patent

active

052350851

ABSTRACT:
Bis(pentaerythritol phosphate) carbonate can be formed by the reaction of pentaerythritol phosphate alcohol and dihydrocarbyl carbonate, such as diphenyl carbonate, preferably in the presence of a transesterification catalyst, such as an imidazole, and in a high boiling organic solvent, e.g., a phosphate ester solvent, which allows for removal of by-product.

REFERENCES:
patent: 3293327 (1966-12-01), Heckenbleikner et al.
patent: 3873496 (1975-03-01), Hills
patent: 4341694 (1982-07-01), Halpern
patent: 4559180 (1985-12-01), Green
patent: 4652667 (1987-03-01), Green
patent: 4681967 (1987-07-01), Green
patent: 4801625 (1989-01-01), Parr et al.
Boellert et al., Chem. Abst., vol. 70, #77610b (1969).

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