Process to prepare alkyl phenyl phosphates
US7700807B2 · kind B2 · utility
0Cited by
5References
17Claims
0Family size
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Key dates
| Filing date | Oct 21, 2004 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | May 21, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is provided for reacting dichloromonophenyl phosphate and monochlorodiphenyl phosphate with aliphatic alcohol in the presence of a Lewis acid catalyst and absence of solvent, at a temperature above 60 to 200° C. and pressure of 0.001 to 1.1 bara, and sparging the reaction mixture with an inert carrier gas if the pressure is above 0.67 bars. Mixtures of monoalkyl biphenyl phosphates and dialkyl monophenyl phosphates and use of such mixtures as a plasticizer and/or flame retardant, are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.