Polyisobutylaminoalcohols and fuels for internal combustion engines containing these products

The present invention relates to polyisobutylaminoalcohols, a process for their preparation and fuels for internal combustion engines and lubricants containing small amounts of the polyisobutylaminoalcohols. Fuels for internal combustion engines or lubricants contain small amounts of polyisobutylaminoalcohols of the formulae Ia and Ib where R is polyisobutyl having a number average molecular weight of 500 to 5,000 and in each of the two formulae one of the radicals X is OH and the other is the group where the radicals Rmay be identical or different and are each hydrogen, alkyl, hydroxyalkyl or aminoalkyl which may be substituted by further hydroxyl- or amino-carrying alkyl radicals, or the two radicals Rmay form a nonaromatic ring.