摘要:
The invention provides a lubricating composition containing hydrocarbyl-capped polyoxyalkylene polyol. The invention further provides lubricating compositions containing the hydrocarbyl-capped polyoxyalkylene polyol; and a method for lubricating a mechanical device with the lubricating composition.
摘要:
Provided is a lubricating oil for continuously variable transmissions characterized by that used as a base oil are a synthetic oil I having the following properties: (a) a traction coefficient at 120° C. is 115% or more of that of 2,4-dicyclohexyl-2-methylpentane, (b) a viscosity at −40° C. is not higher than a viscosity (260 Pa·s) of 2,4-dicyclohexyl-2-methylpentane, and (c) a viscosity index is 65 or higher, and a synthetic oil II having a viscosity of 1 Pa·s or lower at −40° C. and that the above base oil has a specific property. The above lubricating oil is a lubricating oil for continuously variable transmissions which has a high traction coefficient even at high temperature and is endowed with a good low temperature fluidity and which is suited as a lubricating oil for continuously variable transmissions for automobiles.
摘要:
The present invention relates to an additive concentrate comprising a friction modifier, a corrosion inhibitor, and an oil of lubricating viscosity. The invention further provides a method for lubricating a transmission using the additive concentrate.
摘要:
The disclosure relates to a grease composition comprising: (A) a synthetic base oil in majority consisting of alkylaromatic(s); (B) a thickener in majority consisting of at least one metal soap of fatty acids; and (C) a solid lubricant in majority consisting of nanoparticulate polytetrafluorethylene, at least 85% of the particles of which have a size of less than one micron.
摘要:
The present invention provides lubricating oil compositions having excellent anti-wear properties and anti-fatigue properties as well as excellent low temperature fluidity, particularly suitable for automatic transmissions and/or continuously variable transmissions, and internal combustion engines. The compositions comprises (A) a base oil with a kinematic viscosity at 100° C. of 1 to 8 mm2/s, a pour point of −15° C. or lower, an aniline point of 100° C. or higher, the saturates of the base oil containing 40 percent by mass or more of paraffins, 25 percent by mass or less of one ring naphthenes, and 35 percent by mass or less of two to six ring naphthenes, as the main component, and (B) 0.005 to 0.4 percent by mass of a metallic detergent, (C) 0.005 to 0.2 percent by mass in terms of nitrogen of a succinimide-type ashless dispersant, (D) 0.005 to 0.2 percent by mass in terms of phosphorus of a phosphorus-containing anti-wear agent, and (E) 0.01 to 20 percent by mass of a viscosity index improver with a weight average molecular weight (Mw) of 50,000 or greater, on the basis of the total amount of the composition.
摘要:
The present invention relates to a copolymer comprising units derived from monomers (i) an α-olefin and (ii) an ethylenically unsaturated carboxylic acid or derivatives thereof esterified with a primary alcohol branched at the β- or higher position, wherein the copolymer has a reduced specific viscosity of up to 0.08. The invention further provides for a lubricating composition containing said copolymer. The invention further provides a method and use of controlling viscosity index by supplying to an oil of lubricating viscosity the copolymer with pendant groups. In addition, the copolymer of the present invention may be useful as a base oil replacement.
摘要:
Provided is a lubricating oil composition containing a base oil which includes a mineral oil and/or a synthetic oil, and compounded therein, (A) at least one phosphorus-containing compound selected from phosphoric acid monoesters, phosphoric acid diesters and phosphorous acid monoesters, each having a C1 to C8 hydrocarbon group or groups and (B) a tertiary amine compound having C6 to C10 hydrocarbon groups as substituents thereof. The lubricating oil composition provides both a high metal to metal friction coefficient and an excellent wear resistance and is suitably used in a continuously variable transmission.
摘要:
The present disclosure relates to a lubricant composition comprising a first phosphorus compound, a second phosphorus compound, and a third phosphorus compound, wherein the first phosphorus compound is present in the lubricant composition in an amount to provide between about 120 and 350 ppm phosphorus. The lubricant composition may provide robust anti-wear and reduced pitting.
摘要:
A bis-type alkenyl-substituted succinimide which is prepared by reaction of succinic anhydride substituted with 2-alkenyl group having a branch structure in β-position with alkylenepolyamine and its derivatives derived from the bis-type alkenyl-substituted succinimide by post-treatment are of value as friction modifiers, particularly for incorporation into lubricating oils for automatic transmissions.
摘要:
An additive composition may comprise at least one phosphorus- and boron-containing dispersant, at least one boron-containing dispersant, and at least one detergent. Such composition may be useful in power transmissions to provide improved anti-shudder performance and/or improved friction durability.