Chemistry of hydrocarbon compounds – Saturated compound synthesis – By condensation of a paraffin molecule with an olefin-acting...
Reexamination Certificate
2008-01-15
2008-01-15
Dang, Thuan Dinh (Department: 1764)
Chemistry of hydrocarbon compounds
Saturated compound synthesis
By condensation of a paraffin molecule with an olefin-acting...
C585S723000, C585S730000
Reexamination Certificate
active
10973746
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.
REFERENCES:
patent: 2091917 (1937-08-01), Fenske et al.
patent: 2472578 (1949-06-01), Ferris et al.
patent: 3155742 (1964-11-01), Holzman et al.
patent: 3435092 (1969-03-01), Hutson, Jr. et al.
patent: 3496996 (1970-02-01), Osdor
patent: 3725499 (1973-04-01), Goldsby
patent: 3759318 (1973-09-01), Putney
patent: 3839487 (1974-10-01), Clonts
patent: 4075258 (1978-02-01), Caulk et al.
patent: 4139573 (1979-02-01), Carson
patent: 4301315 (1981-11-01), Haskell et al.
patent: 4783567 (1988-11-01), Kocal
patent: 4891466 (1990-01-01), Kocal
patent: 5196626 (1993-03-01), Child et al.
patent: 5345027 (1994-09-01), Child et al.
patent: 5659096 (1997-08-01), Randolph et al.
patent: 5785933 (1998-07-01), Cunningham et al.
patent: 6204425 (2001-03-01), Hommeltoft
Adams John R.
Gelbein Abraham P.
Loescher Mitchell E.
Smith, Jr. Lawrence A.
Catalytic Distillation Technologies
Dang Thuan Dinh
Osha & Liang LLP
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