Abstract:
Use of a tertiary hydrocarbyl amine with Ci- to C2o-hydrocarbyl residues, the overall number of carbon atoms not exceeding 30, as an additive in gasoline for reducing injector nozzle fouling in direct injection spark ignition engines. A fuel additive composition essentially comprising nitrogen-containing dispersants, carrier oils, the above tertiary hydrocarbyl amines and optionally friction modifiers. A fuel composition comprising a major amount of gasoline and a minor amount of the above fuel additive composition.
Abstract:
Amingemisch, enthaltend (A) ein Polyisobutenamin PIB(CH 2 ) x (OH) m (NR 2 R 3 ) n , wobei PIB ein von Polybuten oder Polyisobuten abgeleitetes Gerüst oder einen Polybutyl- oder Polyisobutylrest darstellt, R 2 und R 3 für Wasserstoff, aliphatische oder aromatische Kohlenwasserstoffreste, primäre oder sekundäre, aromatische oder aliphatische Aminoalkylenreste oder Polyaminoalkylenreste, Polyoxyalkylenreste, Heteroaryl- oder Heterocyclylreste stehen und x = 0 oder 1, m = 0 oder 1 und n=1, 2 oder 3 ist, und (B) ein aliphatisches Amin R 4 -NR 2 R 3 , wobei R4 ein C 6 - bis C 600 -Alkylrest ist, erhältlich durch reduktive Aminierung einer Mischung aus (i) des bei der Hydroformylierung von Polybuten oder Polyisobuten entstehenden Oxoproduktes und eines Alkanols R 4 -OH, oder (ii) des bei der Epoxidierung von Polybuten oder Polyisobuten entstehenden Epoxides und eines Alkanols R 4 -OH, oder (iii) der bei der Umsetzung von Polybuten oder Polyisobuten mit Stickoxiden entstehenden Nitroverbindung und eines Alkanols R 4 -OH mit Ammoniak oder einem Amin HNR 2 R 3 . Dieses Amingemisch eignet sich zur Reinigung und Reinhaltung von Einlassventilen und Einspritzdüsen in Ottomotoren.
Abstract:
The present invention describes amides of formula (I) R 1 -(C=O)-(NR 2 )-R 3 wherein R 1 is a linear or branched, preferably linear C 7 - to C 29 -alkyl, or C 7 - to C 29 -alkenyl, preferably C 7 - to C 23 -alkyl or C 7 - to C 23 -alkenyl R 2 is hydrogen or C 1 - to C 4 -alkyl, and R 3 is a hydrocarbyl residue comprising 12 to 200 carbon atoms obtainable from polymerisation of an olefin. The amides may be used in fuel additive packages or fuels, especially gasoline fuel, as additives for improving the fuel efficiency and/or the fuel economy, for reducing or removing deposits on the intake valves and/or for reducing or removing the fouling of injector nozzles, especially in direct injection spark ignition engines.
Abstract:
The use of an alkoxylated polytetrahydrofurane of formula wherein m, m', n, n', p, p' and k are integers in the range of ‰¥ 1, R 1 denotes an unsubstituted linear or branched alkyl radical, R 2 denotes -CH 2 -CH 3 , and R 3 denotes a hydrogen atom or -CH 3 , as an additive in a fuel for reducing fuel consumption in the operation of an internal combustion engine with this fuel.
Abstract:
The invention relates to the use of amines and/or Mannich adducts as detergents and/or dispersants in fuel and lubricant compositions for direction injection spark ignition engines. The invention also relates to fuel and lubricant compositions containing at least one such Mannich adduct, and to a bisaminoalkylated Mannich adduct.
Abstract:
The use of a complex ester obtainable by esterification reaction between aliphatic linear or branched C2- to C12-dicarboxylic acids, aliphatic linear or branched polyhydroxy alcohols with 3 to 6 hydroxyl groups, and, as chain stopping agents, aliphatic linear or branched C1- to C30-monocarboxylic acids or aliphatic linear or branched monobasic C1- to C30-alcohols, as an additive in a fuel for reducing fuel consumption in the operation of an internal combustion engine with this fuel.
Abstract:
The use of an alkoxylated polytetrahydrofurane of formula wherein m, m', n, n', p, p' and k are integers in the range of ‰¥ 1, R 1 denotes an unsubstituted linear or branched alkyl radical, R 2 denotes -CH 2 -CH 3 , and R 3 denotes a hydrogen atom or -CH 3 , as an additive in a fuel for reducing fuel consumption in the operation of an internal combustion engine with this fuel.