Formulation of additives for fuels, comprising at least one composition obtained from a hydroxymidazoline and of a polyamine, and its use as additives for fuels

摘要

Composition resulting, in a first stage, from the reaction of at least one alkenyl- or polyalkenylsuccinic acid or anhydride with at least one 1-(2-hydroxyethyl)imidazoline substituted in the 2 position by a linear or branched alkyl or alkenyl radical containing from 1 to 25 carbon atoms in an imidazoline/succinic derivative molar ratio of 0.1:1 to 0.9:1 with removal of at least 0.15 moles of water per mole of imidazoline, and then, in a second stage, from the reaction of the product originating from the first stage with at least one polyamine in a quantity representing at least 0.1 mole per mole of succinic derivative employed in the first stage. …??Use of these compositions as polyfunctional additives in engine fuels based on hydrocarbons or on a mixture of hydrocarbons and on at least one oxygen compound chosen from the group consisting of alcohols and ethers.