COMPOSITION, METHOD AND USE Russian patent published in 2016 - IPC C10L1/22 C10L10/18 C10L10/06 C10L1/185 

FIELD: chemistry.

SUBSTANCE: invention describes a petrol composition, which includes as an additive one or more salts of (i) quaternary ammonium, formed by reacting a compound of formula and a compound formed by reacting a hydrocarbyl-substituted acylating agent and an amine of formula or , where R is optionally a substituted alkyl, alkenyl, aryl or alkylaryl group, R¹ is an alkyl, aryl or alkylaryl group containing up to 36 carbon atoms, R² and R³ are identical or different alkyl groups containing 1-36 carbon atoms, X is an alkylene group containing 1-20 carbon atoms, n ranges from 0 to 20, m ranges from 1 to 5 and R⁴ is hydrogen or a C₁-C₃₆ alkyl group; wherein the compound of formula (A) is a carboxylic ester selected from a substituted aromatic carboxylic acid, α-hydroxycarboxylic acid and polycarboxylic acid; wherein the hydrocarbyl-substituted acylating agent is polyisobutenyl-substituted succinic anhydride.

EFFECT: disclosed is the use of an additive based on a quaternary ammonium salt in a petrol composition for improving the performance of a petrol engine and for reducing deposits therein.

12 cl, 10 tbl, 25 ex