COMPOSITION OF BENZINE FOR ENGINE HAVING SPARK IGNITION Russian patent published in 1995 - IPC

FIELD: fuel for engines. SUBSTANCE: salt of alkali metal of half-finished ester of alkyl polyether alcohol having formula HO-(CH₂-CH(R′)-O)_n-R where n is 4-25, alkyl group, R-C₆-C₂₀ are represented independently by hydrogen atom R′ or by C₁-C₁₀-alkyl group and of derivative of succinic acid is proposed as additive for benzine, its quantity being 0.0001-0.1 %. Mentioned above derivative of succinic acid has substituted or unsubstituted aliphatic hydrocarbon radical having 15-200 carbon atoms as substituent at least at one of alpha carbon atoms, said substituent is bound with other alpha carbon atom by hydrocarbon group having 1-6 carbon atoms, thus produces ring structure. Additionally benzine may contain polyolefin, its quantity being 0.01-0.12 mass %. Said polyolefin is prepared of C₂-C₆ monomer and/or half-finished ether polyoxyalkylene glycol having formula R²O-[/EO/_mPO/_t]-H where EO is ethyleneoxy, PO is propyleneoxy, R² -alkyl-C₁-C₂₀, m and t are average value if m/(m+t)=0-0.5, t/(m+t)=0.5-1; its molecular weight being 500-3000. 0.0005-0.2 mass % of C₂₀-C₁₅₀ alkyl or alkenyl also may be used in said additive. EFFECT: improves quality of benzine. 2 cl, 3 tbl