Aviation gasoline formulation

Details Aviation gasoline formulation Aviation gasoline formulation

2011-03-01

2011-03-01

McAvoy, Ellen M (Department: 1771)

Mineral oils: processes and products

Products and compositions

Fuels

C208S015000, C208S016000, C585S014000, C044S412000, C044S451000, C044S448000, C044S449000

Reexamination Certificate

active

07897034

ABSTRACT:
An aviation gasoline (Avgas) formulation free from tetraethyl lead (TEL) for piston driven aircraft is described, the formulation comprising, in volume percent, between 0 and 65.2 base alkylate, between 0 and 50 super-alkylate, between 0 and 25 toluene, between 2 and 10 of a toluidine isomer blend, between 0 and 5 ethyl alcohol, between 0 and 25 C5cut and between 0 and 10 triptane. The formulations are prepared by admixing the components, with the order of mixing being from the denser to the less dense, except in the case of the toluidine isomer blend, which in spite of being the denser product is the latest to be added to the other streams in order to by-pass homogenization problems.

REFERENCES:
patent: 3212867 (1965-10-01), Ockerbloom
patent: 5470358 (1995-11-01), Gaughan
patent: 5851241 (1998-12-01), Studzinski et al.
patent: 6238446 (2001-05-01), Henderson
patent: 6258134 (2001-07-01), Studzinski et al.
patent: 6451075 (2002-09-01), Schoppe et al.
patent: 6767372 (2004-07-01), Barnes et al.
patent: 2003/0183554 (2003-10-01), Bazzani et al.
patent: WO 0240620 (2002-05-01), None

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