Method for purifying (meth)acrylic esters
US10508074B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Jan 3, 2017 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | Jan 3, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The subject of the invention is a process for recovering/purifying a C1-C4 (meth)acrylic ester from a crude reaction mixture comprising said ester, the process being carried out using a purification system comprising a divided wall column and a decanter, resulting in a simplification of the process and in a high productivity of the ester produced corresponding to the standards in terms of purity. The invention also relates to a process for producing C1-C4 (meth)acrylic ester comprising this recovery/purification process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.