Process for producing vinyl acetate
US4843170A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1983 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | Feb 15, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/36
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for producing vinyl acetate from methanol, carbon monoxide and hydrogen which comprises the following five steps: PA0 (a) methanol is hydrocarbonylated in a hydrocarbonylation zone to produce ethanol, acetaldehyde, methyl acetate and dimethylacetal, and the products are separated in a separation zone; PA0 (b) methyl acetate is carbonylated in a carbonylation zone to produce acetic anhydride; PA0 (c) the acetaldehyde and dimethylacetal produced in the step (a) and the acetic anhydride produced in the step (b) are converted to ethylidene diacetate and methyl acetate; (d) the ethylidene diacetate produced in the step (c) is thermally decomposed to vinyl acetate and acetic acid, and the products are separated in a separation zone; and PA0 (e) the methyl acetate produced and separated in the step (a), (c) or (d) is supplied to the carbonylation step (b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.