摘要:
Provided is a an additive or composition for imparting lubricity which has high lubricity, is excellent in low-corrosion property, low-temperature fluidity, thermal conductivity, thermal stability, and oxidative stability, and has high flashing point. The lubricant according to the present invention is an additive or composition, wherein the following components (A) an amine or an ammonium compound; and (B) an acid or a salt thereof, have been added therein, wherein at least one of the components (A) and (B) contains a hydrogen-bonding functional group.
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:
This invention relates to anthranilate esters and their use in lubricants, such as engine oils. The invention particularly relates to compositions that deliver an ash-free base to a lubricant in the form of a basic amine additive, without adversely impacting seal compatibility and/or degradation, and methods thereof.
摘要:
Provided is a lubricant composition for a full transmission system, comprising: (A) at least an ashless dispersant; (B) at least a friction modifier; (C) at least a phosphorus-containing antiwear agent; (D) at least an antirust additive; (E) at least a sulfur-containing extreme-pressure additive; (F) at least a metal deactivation additive; (G) at least a viscosity index improver; (H) at least a pour-point depressant; and (I) at least a highly refined mineral oil with high viscosity index, or polyolefin synthetic oil, or ester synthetic oil, or any combination of the above components. The lubricant composition has excellent cleaning dispersity, frictional characteristic, antirust and anti-corrosive properties and extreme pressure abrasion resistance, meets US force standard MIL-PRF-2105E, and can be used for lubrication in various vehicle transmission systems.
摘要:
Internal combustion engines exhibit improved efficiency of the emissions control system by using a lubricating oil composition of a base oil, an alkali or alkaline earth metal-containing detergent; a metal salt of one or more phosphorus-containing compounds represented by the formula (I), wherein X1 and X2 are independently O or S, and R1 and R2 are independently hydrocarbyl groups, the average total number of carbon atoms in R1 and R2 for the one or more phosphorus-containing compounds being at least 10.4; and an acylated nitrogen-containing compound having at least about 10 alphatic carbon atoms and a TBN of at least about 2; the lubricating oil composition being characterized by a phosphorus concentration of up to about 0.12% by weight and the substantial absence of copper, thereby generating a lean-phosphorus containing exhaust gas.
摘要:
This invention is directed to neutral and low overbased alkylphenoxy sulfonates derived from alkylphenols prepared by alkylating phenol with an acidic alkylation catalyst having a Hammett (H.sub.o) acidity function of about -2.3 or less (more negative).