Fuel Additives for Use in High Level Alcohol-Gasoline Blends

Abstract

The present invention provides a fuel additive concentrate comprising a polyetheramine, antioxidant; and a friction modifier selected from the group consisting of an alkoxylated fatty amine, a fatty acid or derivative thereof, and mixture thereof. Additionally, the present invention further provides for a fuel composition comprising a fuel which is a liquid at room temperature; and additive, wherein the additive is selected from the group consisting of: a polyetheramine; antioxidant; friction modifier selected from the group consisting of an alkoxylated fatty amine, a fatty acid or derivative thereof, and mixture thereof; and mixtures thereof.

1 . A fuel additive concentrate comprising:
 a. polyetheramine;   b. antioxidant; and   c. a friction modifier selected from the group consisting of an alkoxylated fatty amine, a fatty acid or derivative thereof, and mixture thereof.   
   
   
       2 . The fuel additive concentrate of  claim 1 , wherein the polyethermamine is represented by the formula RO(AO) m R 1 NR 2 R 3 ; wherein R is a hydrocarbyl group of about 8 to about 30 carbon atoms; A is an alkylene group having 2 to 6 carbon atoms; m is a number from 1 to about 50; R 1  is an alkylene group having 2 to 6 carbon atoms; and R 2  and R 3  are independently hydrogen, a hydrocarbyl group or —[R 4 N(R 5 )] n R 6  wherein R 4  is an alkylene group having 2 to 6 carbon atoms, R 5  and R 6  are independently hydrogen or a hydrocarbyl group, and n is a number from 1 to 7. 
   
   
       3 . The fuel additive concentrate of  claim 2 , wherein the polyetheramine is represented by the formula RO[CH 2 CH(CH 2 CH 3 )O] m CH 2 CH 2 CH 2 NH 2 ; wherein R is an aliphatic group or alkyl-substituted phenyl group of about 8 to about 30 carbon atoms; and m is a number from about 12 to about 30. 
   
   
       4 . The fuel additive concentrate of  claim 3 , wherein the polyetheramine is represented by the formula CH3CH(CH3)[CH2CH(CH3)]2CH(CH3)CH2CH2O[CH2CH(CH2CH3)O]mCH2CH2CH2NH2; wherein m is a number from about 16 to about 28. 
   
   
       5 . The fuel additive concentrate of  claim 1 , wherein the antioxidant is selected from the group consisting of hindered phenol or derivatives thereof, hindered amines or derivatives thereof, and mixtures thereof. 
   
   
       6 . The friction modifier of  claim 1 , wherein the friction modifier is glycerol monooleate. 
   
   
       7 . A fuel composition comprising:
 a. a fuel which is a liquid at room temperature; and   b. additive   
     wherein the additive is selected from the group consisting of: a polyetheramine; antioxidant; friction modifier selected from the group consisting of an alkoxylated fatty amine, a fatty acid or derivative thereof, and mixture thereof; and mixtures thereof. 
   
   
       8 . The fuel composition of  claim 7 , wherein the fuel comprises a blend of ethanol and gasoline having a ratio from 25:75 to 90:10. 
   
   
       9 . A method of fueling an internal combustion engine comprising:
 a. supplying to the internal combustion engine:
 i. a fuel which is a liquid at room temperature; 
 ii. polyetheramine; 
 iii. antioxidant; and 
 iv. a friction modifier selected from the group consisting of an alkoxylated fatty amine, a fatty acid or derivative thereof, and mixture thereof.