Additive for improving the oxidation- stability and/or storage- stability of liquid hydrocarbon fuels or combustible substances

摘要

The présent invention relates to the use of at least one modified alkylphenol-aldehyde resin a s an additive which improves the oxidation-stability and/or storage-stability of a liquid hydrocarbon fuel or oxidizer composition. The modified alkylphenol-aldehyde resin can be obtained by Mannich reaction of an alkylphenol-aldehyde condensation resin with: at least one aldéhyde and/or one ketone having from 1 to 8 carbon atoms, preferably from 1 to 4 carbon atoms; and at least one hydrocarbon compound having at least one alkyl monoamine or alkyl polyamine (alkylamine) group, having between 1 to 30 carbon atoms. The alkylphenolaldehyde condensation resin can itself be obtained by condensation of: at least one alkylphenol substituted with at least one linear or branched alkyl group, having from 1 to 30 carbon atoms, preferably a monoalkylphenol; and at least one aldéhyde and/or one ketone having from 1 to 8 carbon atoms, preferably from 1 t o 4 carbon atoms.