Fuel additive compositions containing polyalkylphenoxy-aminoalkanes and poly (oxyalkylene) amines

A fuel composition comprising a major amount of hydrocarbons boiling in the gasoline or diesel range and an effective deposit-controlling amount of a fuel additive composition comprising:

• (a) a polyalkylphenoxyaminoalkane compound of the formula:
• ##STR21## or a fuel-soluble salt thereof, wherein R is a polyalkyl group having an average molecular weight in the range of about 600 to 5,000;
• R.sub.1 and R.sub.2 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms;
• and
• A is amino, N-alkyl amino having about 1 to about 20 carbon atoms in the alkyl group, N,N-dialkyl amino having about 1 to about 20 carbon atoms in each alkyl group, or a polyamine moiety having about 2 to about 12 amine nitrogen atoms and about 2 to about 40 carbon atoms;
• and
• (b) a poly(oxyalkylene) amine having at least one basic nitrogen atom and a sufficient number of oxyalkylene units to render the poly(oxyalkylene) amine soluble in hydrocarbons boiling in the gasoline or diesel fuel range.

A fuel concentrate comprising an inert stable oleophilic organic solvent boiling in the range of from about 150.degree. F. to 400.degree. F. and from about 10 to about 70 weight percent of a fuel additive composition comprising:

• (a) a polyalkylphenoxyaminoalkane compound of the formula:
• ##STR22## or a fuel-soluble salt thereof, wherein R is a polyalkyl group having an average molecular weight in the range of about 600 to 5,000;
• R.sub.1 and R.sub.2 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms;
• and
• A is amino, N-alkyl amino having about 1 to about 20 carbon atoms in the alkyl group, N,N-dialkyl amino having about 1 to about 20 carbon atoms in each alkyl group, or a polyamine moiety having about 2 to about 12 amine nitrogen atoms and about 2 to about 40 carbon atoms;
• and
• (b) a poly(oxyalkylene) amine having at least one basic nitrogen atom and a sufficient number of oxyalkylene units to render the poly(oxyalkylene) amine soluble in hydrocarbons boiling in the gasoline or diesel fuel range.