| abstract |
Polyisobuteneamines of the general formula R 1 —CH 2 —NR 2 R 3 in which R 1 is a polyisobutyl radical which is derived from isobutene and up to 20% by weight of n-butene and has a number-average molecular weight M n of from 600 to 770, and R 2 and R 3 are each independently hydrogen, a C 1 -C 18 -alkyl, C 2 -C 18 -alkenyl, C 4 -C 18 -cycloalkyl, C 1 -C 18 -alkylaryl, hydroxy-C 1 -C 18 -alkyl, poly(oxyalkyl), polyalkylenepolyamine or polyalkyleneimine radical or, together with the nitrogen atom to which they are bonded, are a heterocyclic ring are suitable as detergents in gasoline fuels, reduce valve sticking and improve the compatibility of the detergents with carrier oils and compatibility in fuel compositions which comprise a mineral fuel content and C 1 -C 4 -alkanols. |