FUEL COMPOSITION Russian patent published in 2013 - IPC C10L1/22 C10L1/238 C10L10/18 C10L10/00 

FIELD: chemistry.

SUBSTANCE: fuel composition contains an additive which is a product of a Mannich reaction, carried out with: (a) aldehyde, (b) polyamine and (c) phenol, having one or more optionally substituted alkyl substitutes. The polyamine component (b) includes a R¹R²NCHR³CHR⁴NR⁵R⁶ group, wherein each of R¹, R² R³, R⁴, R⁵ and R⁶ is independently selected from a hydrogen atom and an optionally substituted alkyl, alkenyl, alkynyl, aryl, alkylaryl or arylalkyl substitute. The composition also includes an additive which contains a quaternary ammonium salt which includes a product of reaction of (a) a hydrocarbyl-substituted acylating agent and a compound which contains an oxygen or nitrogen atom, capable of condensing with said acylating agent, and containing a tertiary amino group, and (b) an agent under the action of which a quaternary salt forms, selected from a group consisting of dialkyl sulphates, benzyl halides, hydrocarbyl-substituted carbonates, hydrocarbyl epoxides combined with an acid or mixtures thereof.

EFFECT: using the additive in a diesel fuel composition improves performance of the diesel engine, particularly reduces engine power loss, reduces deposits on injectors and the fuel filter, and increases fuel saving.

13 cl, 1 dwg, 7 tbl, 9 ex