Process for preparing diaryl alkylphosphonates and oligomeric/polymeric derivatives thereof
US7541415B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Aug 29, 2005 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Aug 29, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/4084
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is provided for the production of diaryl alkyl phosphonate by the reaction of triaryl phosphate with dialkyl alkyl phosphonate in the presence of alkali metal iodide catalyst; and, optionally, the diaryl alkyl phosphonate is reacted in situ with aromatic diol and, optionally, with at least one branching monomer, in the absence of other or further added catalyst to provide oligomeric and/or polymeric phosphonate products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.