COMPONENT OF DEPRESSANT-DISPERSANT ADDITIVE FOR FUELS Russian patent published in 2024 - IPC C08F8/32 C08F210/14 C08F222/06 C10L1/196 C10L1/224 

FIELD: chemistry.

SUBSTANCE: present invention relates to depressant-dispersant additives and compounds included in their composition. Described is a compound obtained by reacting an alkene of general formula R¹R²C=CH₂ with maleic anhydride in the presence of a free radical initiator and subsequent reaction with a secondary aliphatic amine of general formula R³R⁴NH, where R¹ is an alkyl group and includes C₄-C₁₆ carbon atoms, R² is an alkyl group and includes C₆-C₁₈ carbon atoms, R³, R⁴ are alkyl groups containing C₁₂-C₂₀ carbon atoms. Also described is a compound obtained by reacting alkenes of general formulas R¹R²C=CH₂ and R⁵CH=CH₂ with maleic anhydride in an individual aromatic solvent containing from 9 to 12 carbon atoms, in the presence of a free radical initiator of more than 1% by weight, followed by reaction with a secondary aliphatic amine of general formula R³R⁴NH, where R¹ is an alkyl group and includes C₄-C₁₆ carbon atoms, R² is an alkyl group and includes C₆-C₁₈ carbon atoms, R³, R⁴ are alkyl groups containing C₁₂-C₂₀ carbon atoms, R⁵ is a hydrocarbon containing C₆-C₁₈ carbon atoms. Described also is a depressor-dispersant additive for fuels, which contains the above compounds.

EFFECT: obtaining a component of a depressant-dispersant additive, having properties of a paraffin dispersant, capable of reducing the limiting temperature of filterability, increasing sedimentation stability of fuel during cold storage.

9 cl, 7 tbl, 16 ex