Preparation of acetic acid
US7345197B1 · kind B1 · utility
7Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2007 |
| Grant date | Mar 18, 2008 |
| Priority date | — |
| Expiry date | Jun 5, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for removing aldehyde impurities from acetic acid is disclosed. The method comprises extracting the aldehyde impurities from a methyl iodide solution such as the decanter heavy phase with a polyol. After the aldehyde impurities are removed, the methyl iodide heavy phase can be recycled to the carbonylation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.