Separation of propionic acid from acrylic acid
US9493393B2 · kind B2 · utility
2Cited by
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23Claims
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Assignee
Inventors
Key dates
| Filing date | Aug 22, 2014 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Aug 22, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/56
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is provided for chromatographically separating propionic acid from acrylic acid. By means of the inventive process, a reduced propionic acid content acrylic acid product is enabled having a propionic acid content comparable to acrylic acid products from the conventional two stage oxidation of propylene, but wherein the acrylic acid has been produced with a higher propionic acid content by alternative methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.