Neopentylglycol bis(diaryl phosphate) esters
US7166736B2 · kind B2 · utility
1Cited by
1References
14Claims
0Family size
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Key dates
| Filing date | May 6, 2003 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | May 6, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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 P3 content 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.