Polyetheramine Salts and Their Use as Corrosion Inhibitors and Friction Reducers

1 . A fuel additive composition for reducing corrosion and increasing lubricity in hydrocarbonaceous compositions in contact with a fuel system component part or internal combustion engine comprising a polyetheramine salt obtained by either: (a) mixing a polyoxyalkylene monoamine and at least one of a dicarboxylic acid or a tricarboxylic acid; or (b) mixing a polyoxyalkylene polyamine and at least one of a monocarboxylic acid, the dicarboxylic acid, or the tricarboxylic acid.

2 . The fuel additive composition of claim 1 , wherein the polyoxyalkylene monoamine is a compound having a general formula:

where Z is a C

1 -C 40 alkyl group or a C 1 -C 40 alkyl phenol group; each Z′ is independently hydrogen, methyl or ethyl; and e is an integer from about 1 to about 50.

3 . The fuel additive composition of claim 1 , wherein the polyoxyalkylene primary diamine compound having a formula

where m is an integer of 2 to about 100 and each R

2 is independently hydrogen, methyl or ethyl.

4 . The fuel additive composition of claim 3 , wherein each R 2 is independently hydrogen or methyl and m is an integer of 2 to about 70.

5 . The fuel additive composition of claim 1 , wherein the polyoxyalkylene triamine is a compound having a formula

where each R

3 is independently hydrogen, methyl or ethyl, R 4 is hydrogen, methyl or ethyl, t is 0 or 1 and h, i and j independently are integers from about 1 to about 100.

6 . The fuel additive composition of claim 1 , wherein the monocarboxylic acid is selected from formic, acetic, propanoic, isopropanoic, butanoic, pentanoic, isopentanoic, neopentanoic, hexanoic, isohexanoic, 2-ethylbutanoic, heptanoic, 2-methylhexanoic, isoheptanoic, neoheptanoic, octanoic, isooctanoic, 2-ethylhexanoic, nonanoic, isononanoic, 3,5,5,-trimethylhexanoic, decanoic, isodecanoic, neodecanoic, lauric, myristic, palmitic, palmitoleic, margaric, glycolic, lactic, salicylic, acetylsalicylic, stearic mandelic, isostearic, oleic, linoleic, linolenic, nonadecanoic, erucic, behenic acids and mixtures thereof.

7 . The fuel additive composition of claim 1 , wherein the dicarboxylic acid is selected from maleic, tartaric, succinic, glutaric, adipic, sebacic, phthalic, isophthalic and terephthalic acids, dimer acid and mixtures thereof.

8 . The fuel additive composition of claim 1 , wherein the polyetheramine salt is obtained by mixing a polyoxyalkylene monoamine and a dicarboxylic acid.

9 . The fuel additive composition of claim 1 , wherein the polyetheramine salt is obtained by mixing a polyoxyalkylene diamine and a dicarboxylic acid.

10 . The fuel additive composition of claim 1 , further comprising one or more performance additives.

11 . A fuel composition comprising the fuel additive composition of claim 1 and a hydrocarbonaceous composition.

12 . The fuel composition of claim 11 , wherein the hydrocarbonaceous composition comprises gasoline.

13 . The fuel composition of claim 12 , further comprising an oxygenate.

14 . The fuel composition of claim 13 , wherein the oxygenate comprises ethanol.

15 . The fuel composition of claim 14 , wherein the fuel composition comprises ethanol in an amount of 5 vol% to 30 vol%, based on the total volume of the fuel composition.

16 . A method for preventing corrosion and wear reduction of a metal, plastic or synthetic part or surface of a fuel system component or internal combustion engine comprising combining an effective amount of the fuel additive composition with a hydrocarbonaceous composition to form a fuel composition, and contacting the metal, plastic or synthetic part or surface with the fuel composition during operation of the engine.

17 . The method of claim 16 , wherein the internal combustion engine is a gasoline direct injection engine.