Removal of .alpha.-methyl styrene from cumene
US5905178A · kind A · utility
10Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 20, 1998 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | Apr 20, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the removal of .alpha.-methyl styrene from admixtures with cumene by hydrogenation in a catalytic distillation hydrogenation to selectively hydrogenate the side chains and produce cumene is disclosed. The crude cumene may be the byproduct of the cumene oxidation to produce phenol. The crude cumene also contains acetone, benzene, ethyl benzene and high and low boiling carbonyls, which are either removed simultaneously with the hydrogenation/distillation or removed first followed by the selective catalytic distillation hydrogenation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.