Fractional extraction of butadiene
US8222474B2 · kind B2 · utility
1Cited by
6References
7Claims
0Family size
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Key dates
| Filing date | May 22, 2009 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Aug 15, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for the solvent extraction of 1,3-butadiene from a mixture of C4 hydrocarbons that employs a distillation tower to produce the desired 1,3-butadiene product as an overhead and a separate bottoms stream that is removed from and not recycled in the solvent extraction process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.