Methyl acetate purification and carbonylation
US7390919B1 · kind B1 · utility
6Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2007 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Oct 1, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/60
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a method for removing aldehyde impurities from a methyl acetate supply. The method comprises reacting the methyl acetate supply with a polyol and converting the aldehyde impurities to cyclic acetals. The acetals are subsequently removed from the methyl acetate supply by, e.g., distillation. The purified methyl acetate supply is used for carbonylation to produce acetic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.