摘要:
The invention provides a lubricating composition containing an oil of lubricating viscosity and a nitrile compound. The invention further relates to a method of the lubricating an internal combustion engine with the lubricating composition.
摘要:
Parts are diecast from a light metal alloy which in the molten state is fed under gravity into a casting chamber of a diecasting machine and whence forced by a plunger into a mould chamber which undergoes controlled evacuation in accordance with the position of a plunger. A parting compound is applied to at least one mold half and the application of a lubricant to the plunger. The light metal alloy consists of a primary alloy of invariable composition, with a limit placed on the proportions of Cu, Fe and Zn; the alloy undergoes smelting treatment, de-gassing and/or filtration before being introduced. The vacuum in the mould chamber is below 50 mbar when the molten alloy is introduced and the parting compound contains alkali halides and anti-corrosion additives.
摘要:
A process for reducing smoke emitted from a two-cycle internal combustion engine wherein the engine is operated with a lubricant oil-fuel mixture containing certain quaternary ammonium hydroxides. A preferred quaternary ammonium hydroxide is tricapryl methyl quaternary ammonium hydroxide.
摘要:
The title compounds correspond to the formula ##STR1## and are useful as stabilizers for organic polymers and lubricating oils to counteract the degradative effects of heat, light and air.
摘要:
ESTERS OF 4-HYDROXY- AND 4-THIOL-BENZOIC ACIDS, DITHIO, 1,4-DIHYDRO-1-OXO-4-DITHIOMETHYLENEBENZENES AND 1,4DIHYDRO-1-OXO-4- (DITHIACYCLOPENT-2-YLIDENE)-BENZENES IN WHICH THE HYDROXY, THIOL AND OXO GROUPS ARE STERICALLY HINDERED ARE PROVIDED. ALSO PROVIDED ARE INTERMEDIATES FOR SUCH ESTERS AND SUBSTITUTED BENZENES. IN ADDITION, PROCESSES ARE PROVIDED FOR PREPARING THESE INTERMEDIATES FOR SUCH COMPOUNDS AND PROCESSES FOR PREPARING SUCH COMPOUNDS. THESE COMPOUNDS ARE MIXTURES THEREOF ARE USEFUL AS ADDITIVES FOR LUBRICATING OILS PROVIDING SUCH OILS WITH HIGH RESISTANCE TO OXIDATIVE CHANGE. IN ADDITION, OILS CONTAINING CERTAIN OF THE ESTERS, PARTICULAR BIS-ALKYLENE ESTERS, AND CERTAIN OF THE DITHIACYCLOPENTYLIDENE BENZENES AND MIXTURES THEREOF DEMONSTRATES SUPERIOR EXTREME PRESSURE LUBRICATING PROPERTIES.
摘要:
A lubricant composition including a binuclear molybdenum compound (A) and a trinuclear molybdenum compound (B), wherein these compounds are included in a range represented by (molybdenum of the binuclear molybdenum compound (A)):(molybdenum of the trinuclear molybdenum compound (B))=99.98:0.02 to 95:5 as a mass ratio.
摘要:
The invention is directed to oil soluble additive compositions, lubricating oil compositions, and additive concentrates comprising the salt of (1) a molybdenum oxide, sulfide, or oxysulfide; (2) an amide reaction product of a carboxylic acid component and a polyamine component wherein the charge mole ratio (CMR) of the carboxylic acid component to the polyamine component is about 2:1 to 1:1; and (3) a post-treating agent.
摘要:
Disclosed herein is a composition comprising: (A) a lubricant, and (B) at least one 5-hydrocarbyl-2-mercapto-1,3,4-oxadiazole compound of the formula: wherein R1 is a hydrocarbon or functionalized hydrocarbon of from 1 to 30 carbon atoms.
摘要:
This invention relates to synthetic based turbo oils, preferably polyol ester-based turbo oils which exhibit exceptional load-carrying capacity by use of a synergistic combination of sulfur (S)-based and phosphorous (P)-based load additives. The S-containing additive of the present invention is alkylthiosuccinic acid, preferably C.sub.4 -C.sub.12 linear alkyl thiosuccinic acid and the P-containing additive is one or more amine phosphate(s). The turbo oil composition consisting of the dual P/S additives of the present invention achieves an excellent load-carrying capacity, which is better than or equivalent to that obtained when each additive was used alone at a comparable treat rate to the total P/S additive combination treat rate, and this lower concentration requirement of the P and S additives allows the turbo oil composition to meet or exceed US Navy MIL-L-23699 requirements including Oxidation and Corrosion Stability and Si seal compatibility.
摘要:
The present invention provided a finished lubricating oil base stock and an extreme pressure/anti-wear improving amount of a bis acyl-or bis aroyldisulphide of the formula ##STR1## wherein R is independently a hydrocarbyl or substituted hydrocarbyl group.