Mixtures of carboxylic acids, their derivatives and hydroxyl-containing polymers and their use for improving the lubricating effect of oils

摘要

The invention relates to additives for improving lubricating properties of fuel oils, comprisingA) 10-95% by weight of at least one oil-soluble amphiphile of the formulae 1 and/or 2B) 5-90% by weight of at least one copolymer which containsB1) from 5 to 80 mol % of structural units which are derived from olefinically unsaturated compounds, andB2) from 20 to 95 mol % of structural units which are derived from olefinically unsaturated compounds,B3) from 0 to 40 mol % of further structural units selected from the group consisting of (meth)acrylic acid, (meth)acrylates, vinyl esters, vinyl ethers and alkenes,and the copolymer has an average molar mass Mw of from 500 to 100,000 g/mol and an OH number of from 10 to 350 mg KOH/g.