22-10-2020 дата публикации
Номер: US20200332212A1
The invention relates to a composition of additives for fuel, comprising: (a) one or more copolymer(s) comprising the following units of formulae (I) and units of formula (IIa): R representing a hydrocarbon-based chain substituted with at least one amino group comprising at least one quaternary ammonium or iminium function, and (b) one or more copolymer(s) comprising units of formulae (I) and units of formula (IIb): R representing a hydrocarbon-based chain substituted with at least one amino group comprising at least one primary, secondary or tertiary amine function or imine function. The invention also relates to the use of such a composition as a detergent additive and/or demulsifying additive in a liquid fuel for an internal combustion engine. 3. The fuel additive composition according to claim 2 , in which the group R of formula (IIa) is represented by formula (III) in which:{'sup': '−', 'X is chosen from organic anions, preferably conjugate bases of carboxylic acids,'}{'sub': 2', '1', '34', '1', '18, 'Ris chosen from Cto Chydrocarbon-based chains, preferably Cto Calkyl groups,'}{'sub': 3', '4', '5', '1', '18', '3', '4', '5, 'R, Rand Rare identical or different and chosen independently from Cto Chydrocarbon-based chains, optionally substituted with at least one hydroxyl group, it being understood that at least one of the groups R, Rand Rcontains one or more hydroxyl groups.'}4. The fuel additive composition according to claim 1 , in which the group R of formula (IIb) comprises a hydrocarbon-based chain substituted with at least one group chosen from:groups containing at least one amine, imine, amidine, guanidine, aminoguanidine or biguanidine function, preferably alkyl-amines, polyalkylene polyamines, polyalkyleneimines, alkyl-imines, alkyl-amidines, alkyl-guanidines and alkyl-biguanidines, the alkyl substituent possibly being linear or branched, cyclic or acyclic, and preferably containing from 1 to 34 carbon atoms, more preferentially from 1 to 12 carbon atoms ...
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