Neopentylglycol bis(diaryl phosphate) esters

Details Neopentylglycol bis(diaryl phosphate) esters Neopentylglycol bis(diaryl phosphate) esters

2007-01-23

2007-01-23

McKane, Joseph K. (Department: 1626)

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

Organic compounds

Phosphorus esters

C558S147000, C558S146000

Reexamination Certificate

active

10513745

ABSTRACT:
Neopentyl glycol bis(diphenyl phosphate) liquid compositions are described that comprise from about 75% to about 90%, by weight, of neopentyl glycol bis(diphenyl phosphate), less than about 5% by weight of cyclic product, less than about 8% by weight of triphenyl phosphate, and with a P3content of no less than about 1%, by weight. These compositions are made by continuously adding neopentyl glycol to a diaryl chlorophosphate mixture at elevated temperature, under vacuum, and in the presence of a catalyst.

REFERENCES:
patent: 6717005 (2004-04-01), Burkhardt et al.

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