Preparation of a hydroxyalkyl phosphonic acid
US10246474B2 · kind B2 · utility
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2References
4Claims
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Assignee
Inventors
Key dates
| Filing date | Jun 8, 2015 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Dec 3, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/3808
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention is a process for converting a phosphonate to a hydroxyalkyl phosphonic acid comprising the step of contacting together water, the phosphonate, and a sulfonated or phosphonated heterogeneous catalyst under conditions sufficient to convert at least 50% of the phosphonate to the hydroxyalkyl phosphonic acid. The process of the present invention provides a way of preparing hydroxyalkyl phosphonic acids safely and economically, without corrosive effects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.