| abstract |
Fuels for gasoline engines containing small amounts of a polyetheramine and / or polyetheramine derivative of the general formula wherein R¹ is a phenol or alkylphenol polyether radical of the general formula or a cyclohexyl or alkylcyclohexyl polyether radical of the general formula means R² and R³ may be the same or different and for hydrogen, the phenol or alkylphenol polyether radical (IIIa), the cyclohexyl or alkylcyclohexylpolyether radical (IIIb), the acyl radical of a carboxylic acid having 2 to 24 carbon atoms or the hydroxyalkyl radical of the general formula are or R² is an alkyl radical with 1 to 20 carbon atoms and R³ is hydrogen, the phenol or alkylphenol polyether radical (IIIa), the cyclohexyl or alkylcyclohexylpolyether radical (IIIb), the acyl radical of a carboxylic acid with 2 to 24 carbon atoms or the hydroxyalkyl radical ( IV) stands R⁴ is the carboxylate radical of a carboxylic acid having 2 to 24 carbon atoms, R⁵, R⁶ and R⁷ may be the same or different and represent hydrogen or a hydrocarbon radical having 1 to 30 carbon atoms, R⁸ is a polyether chain of alkene oxides having 2 to 8 carbon atoms or mixtures of these alkene oxides with 2 to 100 alkene oxide units in the chain and R⁹ is hydrogen or a hydrocarbon radical with 1 to 6 carbon atoms and m is the numbers 0 to 5, the average molecular weight M n of the polyetheramines or polyetheramine derivatives (I) or (II) 500 to 8000 and the polyetheramines or the polyetheramines on which the polyetheramine derivatives are based by amination of phenol or alkylphenol polyethers of the general formula or of cyclohexyl or alkylcyclohexyl polyethers of the general formula wherein R⁵, R⁶, R⁷ and R⁸ have the meanings mentioned, are made with ammonia or primary amines.n n n The new polyetheramines and their derivatives have an improved valve cleaning effect. |