Processes for preparing alkylated aromatic compounds
US8609915B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2012 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Jul 10, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2/66
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Processes for preparing alkylation aromatic compounds are provided herein. In an embodiment, a process for preparing alkylated aromatic compounds includes reacting an aromatic compound and an olefin in a first alkylation reaction in the presence of a first alkylation catalyst to produce a first effluent that includes an alkylated aromatic compound and unreacted aromatic compound. Unreacted aromatic compound from the first effluent and additional olefin are reacted in at least one downstream alkylation reaction in the presence of a second alkylation catalyst to produce a second effluent including the alkylated aromatic compound. A recycle stream including the alkylated aromatic compound is recycled from the second effluent to the at least one downstream alkylation reaction and, optionally, the first alkylation reaction. A ratio of the recycle stream to a total mass flow is greater in the at least one downstream alkylation reaction than in the first alkylation reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.