MULTIFUNCTIONAL MOTOR FUEL ANTIKNOCK ADDITIVE Russian patent published in 2005 - IPC

FIELD: petroleum processing and petrochemistry.

SUBSTANCE: additive contains 0.0502.5% ferrocene and/or derivatives thereof, 10.0-95% aromatic amine, 0.01-15% at least on free radical-capturing stabilizer selected from group comprising formamide, methylformamide, dimethylformamide, N-methylacetamide, N,N-dimethylacetamide, acetanilide, formanilide, phthalimide, succinimide, caprolactam, and diphenylurea; 0.05-1.0% antioxidant, and to 100% oxygenate. Use of the additive essentially increases octane number of base gasoline as compared to value of prototype at relatively low concentrations of ferrocene, aromatic amines, stabilizers, and oxygenates owing to realization of combined synergetic effects. As a result, octane number of standard mixture (70 vol % isooctane and 30 vol % n-heptane) may be raised by 9-12 points according to motor method and by 13-17 points according to research method without recurring to beyond-standard iron and N-methylaniline concentrations.

EFFECT: improved phase and chemical stabilities of fuel, improved performance characteristics thereof, enhanced removal of deposits in fuel-injection system of engine, and reduced amount of toxic substances in exhaust gases.

7 cl, 2 tbl