摘要:
A lubricating composition comprises a major amount of an oil of lubricating viscosity and 0.01 to 25 percent by weight, based on the weight of the composition, of a poly(2-oxazoline) polymer. The polymer has the repeat unit:
-N(COR 1 )CH 2 CH 2 -
wherein the number of repeat units (n) in the polymer is an integer between 4 and 1000, such as between 4 and 500. The polymer carries an inorganic or organic nucleophilic polymerisation terminating group (t), and an initiator group (i) connected to the N atom of a repeat unit, the initiator group (i) being effective to initiate the polymerisation of linear, branched or cyclic hydrocarbyl moieties. At least 5% of the total number of the groups R 1 in the polymer comprise alkenyl groups having between 15 and 20 carbon atoms.
摘要:
The invention provides an oil of lubricating viscosity, a dispersant and an amine-functionalised additive, wherein the amine-functionalised additive is derived from an amine having at least 3 or 4 aromatic groups. The invention further relates to the use of the lubricating composition in an internal combustion engine.
摘要:
The invention relates to polyalkene amine formulations comprising at least one polyalkene amine in a solvent. Said formulations have improved applicational properties, especially at low temperatures. The invention also relates to a method for the production of said formulations, in addition to the use thereof in fuel and lubrication compositions, especially fuels, in order to improve the effects of said fuel on the cleaning of the inlet system.
摘要:
An oligomer from diarylamines is disclosed which has desirable antioxidant properties in lubricating oils which contain synthetic ester lubricants. The oligomer is desirable for use at higher temperatures where it has less volatility than simple diarylamines. The oligomer has substantial portions of monosubstituted diphenylamine repeat units which result in linear oligomers. Di and polysubstituted diphenylamines may optionally be present as repeat units. These di and polysubstituted diphenylamines generally react as monofunctional reactants in oligomerization and tend to reduce the number of repeat units in the average oligomer.
摘要:
This invention relates to a cold rolling oil additive and an emulsion type cold rolling oil composition. The additive according to the invention is a compound obtainable by reacting at least one member of polyalkylenepolyamines and polyalkyleneimines each containing 3 to 200 N atoms with at least one member of fatty acid compounds, glycidyl ether compounds and epoxy compounds. With this additive, cold rolling oil compositions having excellent lubricating and stable circulation characteristics can be easily obtained.
摘要:
An extreme pressure composition is provided wherein the composition comprises a carrier medium and an aminocarboxylic acid-terminated polyoxyalkylene having at least four oxyalkylene units.