Processes for preparing N-ethyl-2-methylpyridinium bromide and N-ethyl-3-methylpyridinium bromide
US9453285B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Mar 20, 2014 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Aug 23, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B1/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for preparing an aqueous solution of N-ethyl-2-methylpyridinium bromide (2-MEPy), comprising reacting 2-picoline and ethyl bromide in a pressure reactor at a temperature above the melting point of the reaction mixture, combining the reaction product with water, wherein said reaction product consists essentially of 2-MEPy in a liquid form, and recovering an aqueous solution of 2-MEPy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.