Process for the preparation of 2,6-dimethylnaphthalene
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United States of America Patent
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-
Jul 10, 2007
Grant Date -
Jun 8, 2006
app pub date -
Jan 18, 2006
filing date -
Oct 18, 1999
priority date (Note) -
Expired
status (Latency Note)
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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, and/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 and in the presence of a catalytic composition comprising a zeolite belonging to the MTW structural type and at least one element selected from P, B and Si. The process is preferably carried out in the presence of a methylating agent.
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