US2010263262A1PendingUtilityA1

Unleaded aviation gasoline

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Assignee: EXXONMOBIL RES & ENG COPriority: Apr 10, 2009Filed: Mar 30, 2010Published: Oct 21, 2010
Est. expiryApr 10, 2029(~2.7 yrs left)· nominal 20-yr term from priority
Inventors:Roger G. Gaughan
C10G 2300/202C10L 1/238C10L 1/223C10L 1/1616C10G 2300/305C10L 1/143C10G 2400/02C10L 1/1608C10L 1/2383C10L 1/00C10L 2270/04C10L 10/10
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Claims

Abstract

The present invention relates to an aviation gasoline formed by blending (i) an unleaded base fuel having a base MON of at least 94, with (ii) at least one aromatic amine effective to provide the base fuel with a final MON of at least 100.

Claims

exact text as granted — not AI-modified
1 . An aviation gasoline formed by blending (i) an unleaded fuel having a MON of at least 94, with (ii) at least one aromatic amine effective to provide the unleaded fuel with a final MON of at least 100, the aromatic amine having the formula 
       
         
           
           
               
               
           
         
       
       wherein R x  is C 1 -C 10  alkyl, a halogen or a mixture thereof, n is an integer from zero to 3 and wherein when n is 1, 2 or 3 and R x  is an alkyl group, the alkyl group occupies the meta and/or para position on the phenyl ring. 
     
     
         2 . An aviation gasoline comprising an unleaded fuel having a MON of at least 94 and an effective amount of at least one aromatic amine to provide the unleaded fuel with a final MON of at least 100, the aromatic amine having the formula 
       
         
           
           
               
               
           
         
       
       wherein R x  is C 1 -C 10  alkyl, halogen or a mixture thereof, n is an integer of from zero to 3 provided that when n is 1, 2 or 3 and R x  is alkyl it is in the meta and/or para position on the phenyl ring. 
     
     
         3 . The aviation gasoline of  claim 1  or  claim 2  further including up to about 1000 ppm of a deposit control additive selected from the group consisting of high molecular weight hydrocarbyl amine, carrier oil, high molecular weight succinimide, high molecular weight hydrocarbyl substituted Mannich bases, and mixtures thereof. 
     
     
         4 . The aviation gasoline of  claim 3  wherein the deposit control additive is present in an amount up to about 500 ppm active ingredient. 
     
     
         5 . The aviation gasoline of any of the previous claims wherein the unleaded fuel has a MON of at least 95. 
     
     
         6 . The aviation gasoline of any of the previous claims wherein the unleaded fuel has a MON of at least 96. 
     
     
         7 . The aviation gasoline of any of the previous claims wherein the unleaded fuel has a MON of at least 97. 
     
     
         8 . The aviation gasoline of any of the previous claims wherein the unleaded fuel has a MON of at least 98. 
     
     
         9 . The aviation gasoline of any of the previous claims wherein the unleaded fuel has a MON of at least 99. 
     
     
         10 . The aviation gasoline of any of the previous claims wherein the unleaded fuel has a MON of at least 100. 
     
     
         11 . The aviation gasoline of any of the previous claims wherein the unleaded fuel has a MON of at least 101. 
     
     
         12 . The aviation gasoline of any of the previous claims wherein the unleaded fuel has a MON of at least 102. 
     
     
         13 . The aviation gasoline of any of  claims 1  to  4 , wherein the aviation gasoline contains from about 8.5 weight percent to about 14.5 weight percent of the aromatic amine. 
     
     
         14 . The aviation gasoline of any of  claims 1  to  4 , wherein the aviation gasoline contains from about 9.5 weight percent to about 13.5 weight percent of the aromatic amine. 
     
     
         15 . The aviation gasoline of any of  claims 1  to  4 , wherein the aviation gasoline contains from about 10.5 weight percent to about 12.5 weight percent of the aromatic amine. 
     
     
         16 . The aviation gasoline of any of  claims 1  to  4 , wherein the aviation gasoline contains from about 11 weight percent to about 12 weight percent of the aromatic amine. 
     
     
         17 . The aviation gasoline of any of  claims 1  to  4  wherein the final MON is at least 101. 
     
     
         18 . The aviation gasoline of any of  claims 1  to  4  wherein the final MON is at least 102. 
     
     
         19 . The aviation gasoline of any of  claims 1  to  4  wherein the final MON is at least 103. 
     
     
         20 . The aviation gasoline of any of  claims 1  to  4  wherein the final MON is at least 104. 
     
     
         21 . The aviation gasoline of any of the preceding claims further comprising at least one additional additive selected from the group consisting of octane boosters, antioxidants, co-solvents, toluene, metal deactivators, dyes, and combinations and mixtures thereof. 
     
     
         22 . A method for fuelling an aircraft comprising providing to the aircraft an aviation gasoline comprising an unleaded fuel having a MON of at least 94 and sufficient aromatic amine of the formula: 
       
         
           
           
               
               
           
         
       
       wherein R x  is selected from the group consisting of C 1 -C 10  alkyl, halogen or a mixture thereof, n is an integer of from zero to 3 provided that when n is 1, 2 or 3 and R x  is alkyl, it is in the meta- and/or para position on the phenyl ring to provide the base fuel with a final MON of at least 100. 
     
     
         23 . The method of  claim 22  wherein the aviation gasoline further includes a deposit control additive selected from the group consisting of high molecular weight hydrocarbyl amine, high molecule weight hydrocarbyl succinimide, high molecular weight hydrocarbyl substituted Mannich base, carrier oil, and mixtures thereof, wherein the high molecular weight hydrocarbyl substituent has a weight average molecular weight of about 400 to 2800 Mw. 
     
     
         24 . The method of  claim 22  wherein the unleaded fuel has a MON of at least 95. 
     
     
         25 . The method of  claim 24  wherein the aviation gasoline contains from about 11 weight percent to about 12 weight percent of the aromatic amine. 
     
     
         26 . The method of  claim 25  wherein the unleaded base fuel has a final MON of at least 104. 
     
     
         27 . The method of any of  claims 22  to  26  wherein the aviation gasoline further comprises at least one additional additive selected from the group consisting of octane boosters, antioxidants, co-solvents, toluene, metal deactivators, dyes, and combinations and mixtures thereof. 
     
     
         28 . The method of any of  claims 22  to  27  further including the step of filtering the fuel.

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