Low lead aviation gasoline blend
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United States of America Patent
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Sep 17, 2002
Grant Date -
N/A
app pub date -
Dec 9, 1999
filing date -
Dec 9, 1999
priority date (Note) -
Expired
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Abstract
A particularly useful low lead aviation gasoline fuel blend complies with all requirements of ASTM D 910 and includes 67.0 volume % isooctane, 18.0 volume % xylene, 12.0 volume % isopentane, 3.0 volume % isobutane and 0.47 mL/gal of tetraethyl lead. Another useful low lead aviation gasoline fuel blend which complies with all requirements of ASTM D 910 except for oxygenate content includes 60.0 volume % isooctane, 15.0 volume % xylene, 14.0 volume % methyl t-butyl ether, 8.0 volume % isopentane, 3.0 volume % isobutane and 0.2 mL/gal of tetraethyl lead. The isooctane used in either case is a purified isooctane prepared either by fractionating a crude DIB material and hydrogenating the fractionated material or hydrogenating the crude DIB material and fractionating the hydrogenated material.
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