	US 11,674,100 B2
	High octane unleaded aviation gasoline
George W Braly, Ada, OK (US)
Assigned to GENERAL AVIATION MODIFICATIONS, INC., Ada, OK (US)
Filed by GENERAL AVIATION MODIFICATIONS, INC., Ada, OK (US)
Filed on Aug. 23, 2021, as Appl. No. 17/409,585.
Application 17/409,585 is a continuation of application No. 16/374,616, filed on Apr. 3, 2019, granted, now 11,098,259.
Application 16/374,616 is a continuation of application No. 13/841,560, filed on Mar. 15, 2013, granted, now 10,260,016, issued on Apr. 16, 2019.
Application 13/841,560 is a continuation in part of application No. 12/958,390, filed on Dec. 1, 2010, granted, now 8,628,594, issued on Jan. 14, 2014.
Claims priority of provisional application 61/319,255, filed on Mar. 30, 2010.
Claims priority of provisional application 61/316,158, filed on Mar. 22, 2010.
Claims priority of provisional application 61/265,606, filed on Dec. 1, 2009.
Prior Publication US 2022/0145198 A1, May 12, 2022
Int. Cl. C10L 1/223 (2006.01); C10L 1/16 (2006.01); C10L 1/06 (2006.01); C10L 1/14 (2006.01); C10L 10/10 (2006.01)

CPC C10L 1/223 (2013.01) [C10L 1/06 (2013.01); C10L 1/14 (2013.01); C10L 10/10 (2013.01); C10L 1/1608 (2013.01); C10L 2270/023 (2013.01); C10L 2270/04 (2013.01)]

32 Claims

1. A high octane unleaded aviation gasoline, comprising:

(a) at least one unleaded aviation gasoline base fuel having a selected motor octane number;

(b) one or more monoalkylated benzenes, wherein said one or more monoalkylated benzenes comprises toluene, and wherein said toluene comprises no more than ten percent (10%) by weight of said high octane unleaded aviation gasoline;

(c) one or more dialkylated benzenes, said one or more dialkylated benzenes comprising meta-xylene, para-xylene, and ortho-xylene, said para-xylene comprising no more than thirteen percent (13%) by weight of said high octane unleaded aviation gasoline, said ortho-xylene comprising no more than eleven percent (11%) by weight of said high octane unleaded aviation gasoline, and wherein said meta-xylene and said para-xylene together comprise no more than forty five percent (45%) by weight of said unleaded aviation gasoline;

(d) one or more aromatic amines; said one or more aromatic amines comprises meta-toluidine, and wherein said meta-toluidine is present at more than zero percent (0%) to about up to about six percent (6.0%) by weight;

(e) wherein (1) said one or more aromatic amines, (2) said one or more monoalkylated benzenes, and (3) said one or more dialkylated benzenes, together comprise at least thirty seven percent (37%) by weight of said high octane unleaded aviation gasoline, and no more than fifty one percent (51%) by weight of said high octane unleaded aviation gasoline, and together are provided in amounts sufficient to provide detonation performance of said high octane unleaded aviation gasoline in a full scale aircraft engine to the equivalent, or better, than the detonation performance in the full scale aircraft engine of a selected Grade 10OLL avgas; and

(f) wherein said high octane unleaded aviation gasoline comprises from about one percent (1%) to about twenty percent (20%) of C₄to C₅paraffins by weight, in amounts sufficient to provide vapor pressure of said high octane unleaded aviation gasoline compatible for use in spark ignition aviation piston engines, and wherein said C₄to C₅paraffins comprises butane, and wherein n-butane, iso-butane, or a mixture thereof comprises more than zero percent (0%) to about five percent (5%), by weight of said high octane unleaded aviation gasoline.