Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By skeletal isomerization
Patent
1982-09-22
1984-11-13
Gantz, Delbert E.
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
By skeletal isomerization
203DIG6, 203 28, 203 29, 203 38, 585329, 585510, 585515, 585668, 585832, 585921, 585954, C07C 524, C07C 704
Patent
active
044827750
ABSTRACT:
A method for isomerizing isobutene or n-butene to produce a mixture of isobutene and normal butene, and polymerizing at least a portion thereof to produce isobutene
-butene codimer, which comprieses feeding at least 80 weight % of either the isobutene or n-butene to a catalytic distillation reactor containing a fixed bed acidic cation exchange resin catalyst packing which provides both the catalyst sites and distillation sites for the reaction products, isomerizing a portion of the isobutene or n-butene to produce a mixture of isobutene and n-butene and reacting at least a portion of the isobutene and n-butene to form codimer of isobutene and n-butene, whereby an overhead fraction containing any unreacted isobutene and n-butene and a bottoms fraction containing codimer is produced. The result of the reaction is substantially the same regardless whether the feed is isobutene or n-butene. Other aspects of the invention, include combinations of procedures to produce high purity isobutene and n-butene.
Either isobutene or n-butene product (depending on the desired product) can be recycled as feed, thus substantially carrying out the isomerization to extinction and total conversion to the desired product.
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Chemical Research & Licensing Company
Gantz Delbert E.
Johnson Kenneth H.
Pal A.
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