Chemistry of hydrocarbon compounds – Saturated compound synthesis – By condensation of a paraffin molecule with an olefin-acting...
Reexamination Certificate
2006-02-07
2006-02-07
Dang, Thuan D (Department: 1764)
Chemistry of hydrocarbon compounds
Saturated compound synthesis
By condensation of a paraffin molecule with an olefin-acting...
C585S723000, C585S730000
Reexamination Certificate
active
06995296
ABSTRACT:
A process for the alkylation of alkane with olefin or olefin precursor such as an oligomer of tertiary olefin comprising contacting a liquid system comprising acid catalyst, isoparaffin and olefin in concurrent downflow into contact in a reaction zone with a disperser mesh under conditions of temperature and pressure to react said isoparaffin and said olefin to produce an alkylate product is disclosed. Preferably, the liquid system is maintained at about its boiling point in the reaction zone. Unexpectedly, the olefin oligomers have been found to function as olefin precursors and not as olefins in the reaction. Thus, for example, a cold acid alkylation using an oligomer of isobutene (principally dimer and trimer) with isobutane produces isooctane with the isobutane reacting with the constituent isobutene units of the oligomers on a molar basis. The product isooctane is essentially the same as that produced in the conventional cold acid process.
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Adams John R.
Gelbein Abraham P.
Loescher Mitchell E.
Smith, Jr. Lawrence A.
Catalytic Distillation Technologies
Dang Thuan D
Johnson Kenneth H.
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