Process for the preparation of 2,6-dimethylnaphthalene using a MTW zeolitic catalyst
US6147270A · kind A · utility
6Cited by
3References
36Claims
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Key dates
| Filing date | Mar 31, 1999 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | Mar 31, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/70
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A highly selective process is described for preparing 2,6-dimethylnaphthalene which comprises reacting a naphthalene hydrocarbon selected from naphthalene, methylnaphthalenes, dimethylnaphthalenes, trimethylnaphthalenes, polymethylnaphthalenes or their mixtures with one or more benzene hydrocarbons selected from benzene, toluene, xylenes, trimethylbenzenes, tetramethylbenzenes, pentamethylbenzene and/or hexamethylbenzene, under at least partially liquid phase conditions, in the presence of a zeolite belonging to the structural type MTW and optionally in the presence of a methylating agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.