Process for the production of acetic acid C4-esters
US6949671B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2002 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Aug 28, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for treating a mixed C4 stream comprising iso-butene and 1,3-butadiene by (a) reacting the stream with acetic acid in an addition reactor, (b) withdrawing product comprising iso-butene acetate, sec-butenyl acetate, n-butenyl acetate and t-butyl acetate, and recovering n-butenyl acetate from the product and separating and recycling t-butyl acetate to the addition reactor. The process provides increased efficiency of acetic acid utilisation together with useful products, e.g. n-butenyl and sec-butenyl acetates which can be separated and sold as such or converted to other products. The unreacted isobutene can be separated and used as such, or recycled and allowed to dimerise to di-isobutene, another useful product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.