Abstract:
The invention provides a polyoxyalkylene compound of general formula
wherein R¹ represents a hydrogen atom or an optionally substituted alkyl, alkenyl, alkynyl, aryl, arylalkyl, cycloalkyl, alkylaryl or heterocyclyl group; R² represents an optionally substituted alkyl, alkenyl, alkynyl, aryl, arylalkyl, cycloalkyl, alkylaryl, heterocyclyl, alkoxy, aryloxy, alkylamino, dialkylamino or arylamino group; A represents an oxygen atom (-O-) or a group -NH-; and X represents a polyoxypropylene chain or a random copolymer of ethylene oxide/propylene oxide, and an oxygen atom of group X is bonded directly to the R²CO- moiety. The invention further provides a process for the preparation of the compound, a lubricating oil composition and a fuel composition which each include the compound, a lubricating oil concentrate, the use of the compound as a rust inhibitor and a method of operating an internal combustion engine.
Abstract:
An additive for a lubricating oil composition includes (a) a halogenated copolymer prepared from ethylene, a C₃ to C₁₈ alpha-olefin, preferably a C₃ to C₈, or mixtures thereof, and at least one halogen, and (b) an amino-aromatic polyamine compound.
Abstract:
L'invention concerne une composition d'additifs pour carburant comprenant : (a) un ou plusieurs copolymère(s) comprenant : - au moins un motif de formule (I) suivante : dans laquelle R 1 est choisi parmi l'hydrogène et le groupement méthyle, R' 2 est choisi parmi les chaines hydrocarbonées en C 1 à C 34 , un noyau aromatique, un aralkyle comprenant au moins un noyau aromatique et au moins un groupement alkyle en C 1 à C 34 , et - au moins un motif de formule (II) suivante : dans laquelle R 1 est choisi parmi l'hydrogène et le groupement méthyle, Z est choisi parmi l'atome d'oxygène et le groupement –NR'- avec R' étant choisi parmi un atome d'hydrogène et les chaines hydrocarbonées en C 1 à C 12 , G comprend une chaine hydrocarbonée en C 1 à C 34 substituée par au moins un groupement ammonium quaternaire et éventuellement un ou plusieurs groupements hydroxyle, le groupement G pouvant également contenir un ou plusieurs atomes d'azote et/ou d'oxygène et/ou groupements carbonyle 25 (b) au moins un composé sélectionné parmi les succinimides substitués par une chaine hydrocarbonée.
Abstract:
A method of controlling deposits and/or improving the efficiency and/or improving the fuel economy in a direct injection spark ignition gasoline engine comprises adding into the gasoline to be combusted: (i) a detergent compound which is the reaction product of a carboxylic acid-derived acylating agent and an amine; and (ii) optionally, one or more additional components selected from: a) carrier oils comprising an optionally esterified polyether; b) polyetheramines; c) hydrocarbyl-substituted amines wherein the hydrocarbyl substituent is substantially aliphatic and contains at least 8 carbon atoms; d) nitrogen-containing condensates of a phenol, aldehyde and primary or secondary amine; e) aromatic esters of a polyalkylphenoxyalkanol.
Abstract:
Lubricating oils which are utilized in two-stroke engines sometimes produce clogging (gelation) in fuel filters. The gelling is particularly pronounced when an alkali metal or alkaline earth metal containing composition is present in the lubricating oil or the fuel. The present invention deals with this particular problem by introducing a hydrocarbon-soluble or dispersible polycarboxylic acid to the fuel and oil mixture.
Abstract:
A succinimide composition is prepared by reacting a mixture of an alkenyl or alkylsuccinic acid derivative, an unsaturated acidic reagent copolymer, and a polyamine under reactive conditions. The alkenyl or alkyl substituent of the alkenyl or alkylsuccinic acid derivative has a Mn of from 1000 to 5000. The unsaturated acidic reagent copolymer is a copolymer of an unsaturated acidic reagent and an alkylene group. That alkylene group can be an alpha -olefin having 8 to 42 carbon atoms, a polyalkylene having from 8 to 28 carbon atoms, ethylene, styrene, 1,3-butadiene, vinyl alkyl ether having at least 3 carbon atoms, or vinyl alkanoate having at least 4 carbon atoms. The polyamine has at least three nitrogen atoms and 4 to 20 carbon atoms. The mixture contains from 0.5 to 10 equivalents of the alkenyl or alkylsuccinic acid derivative per equivalent of unsaturated acidic reagent copolymer and from 0.4 to 1.0 moles of polyamine per equivalent of alkenyl or alkylsuccinic acid derivative plus unsaturated acidic reagent copolymer.
Abstract:
A succinimide composition is prepared by reacting a mixture of an alkenyl or alkylsuccinic acid derivative, an unsaturated acidic reagent copolymer, and a polyamine under reactive conditions. The alkenyl or alkyl substituent of the alkenyl or alkylsuccinic acid derivative has a Mn of from 1000 to 5000. The unsaturated acidic reagent copolymer is a copolymer of an unsaturated acidic reagent and an alkylene group. That alkylene group can be an α-olefin having 8 to 42 carbon atoms, a polyalkylene having from 8 to 28 carbon atoms, ethylene, styrene, 1,3-butadiene, vinyl alkyl ether having at least 3 carbon atoms, or vinyl alkanoate having at least 4 carbon atoms. The polyamine has at least three nitrogen atoms and 4 to 20 carbon atoms. The mixture contains from 0.5 to 10 equivalents of the alkenyl or alkylsuccinic acid derivative per equivalent of unsaturated acidic reagent copolymer and from 0.4 to 1.0 moles of polyamine per equivalent of alkenyl or alkylsuccinic acid derivative plus unsaturated acidic reagent copolymer.