Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By alkyl transfer – e.g. – disproportionation – etc.
Reexamination Certificate
2007-05-22
2007-05-22
Caldarola, Glenn (Department: 1764)
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
By alkyl transfer, e.g., disproportionation, etc.
C585S643000, C585S644000, C585S324000
Reexamination Certificate
active
10974516
ABSTRACT:
A process for the production of propylene from the metathesis of ethylene and 2-butene is disclosed wherein a mixed C4stream is first treated to enrich and separate the 2-butene from 1-butene and isobutene by isomerization of 1-butene and concurrent fractional distillation of the 2-butene and isobutene to provide the 2-butene feed the metathesis with ethylene. In addition the mixed C4stream may be treated to remove mercaptans and dienes prior to 2-butene enrichment.
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Adams John R.
Judzis Arvids
Podrebarac Gary G.
Bullock In Suk
Caldarola Glenn
Catalytic Distillation Technologies
Johnson Kenneth H.
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