Process to separate butadiene dimers
US7388121B2 · kind B2 · utility
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4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2002 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | Jun 16, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/54
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process to separate butadiene dimers from a mixture comprising butadiene dimers and alkyl-3-pentenoate and/or isomers thereof wherein the butadiene dimers are separated from said mixture by distillation in the presence of an alcohol and in that the distillation is effected at a bottom temperature of between 80 and 200° C. Examples of frequent occurring butadiene dimers are 4-vinylcyclohexene and 1,3,7-octatriene. Examples of the alcohol are monohydroxy aliphatic alcohols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.