摘要:
A lubricating oil composition for refrigerating machines contains a base oil and an additive in a form of a hydrocarbon compound having a biphenyl structure or a stilbene structure. When the present lubricating oil composition for refrigerating machines is used in refrigerating equipment such as an open-type automobile air-conditioner, an electric automobile air-conditioner, a gas heat pump, other air-conditioning equipment, a refrigerating machine, a vending machine, a showcase, a water-heating system and a refrigerating/heating system, it is possible to detect the leakage of a refrigerant with a long-lasting stability. Therefore, when an unsaturated chlorofluorocarbon refrigerant with a poor stability is used in the above-listed equipment, the present lubricating oil composition for refrigerating machines is significantly advantageous.
摘要:
A lubricating oil comprises a major amount of a base oil and a minor amount of an additive package, and the additive package comprises at least one friction modifier of formula I: where R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl having about 8 to about 22 carbon atoms or R is represented by: and R1 is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl having about 8 to about 22 carbon atoms and R2 is hydrogen or a hydrocarbyl having about 1 to about 2 carbon atoms. Methods of using the lubricating oil to improve thin film and/or boundary layer friction in an engine are also disclosed.
摘要:
Provided is a method of identifying authenticity of oil by reacting oil marked by a Oil Marker Composition with a developer to develop a color and then measuring absorbance. According to the present invention, an oil maker capable of quantitatively and qualitatively measuring authenticity of oil due to a rapid reaction rate, excellent reproducibility, and distinct color development that may be observed by the naked eyes, and a method of identifying oil using the same.
摘要:
Polytetrahydrobenzoxazines and bistetrahydrobenzoxazines, obtainable by (A) reacting at least one diamine of the formula H2N-A-NH2 with a C1- to C12-aldehyde and a C1- to C8-alkanol at 20 to 80° C. with elimination and removal of water, (B) reacting the condensation product from (A) with a phenol which bears a long-chain substituent at 30 to 120° C., and optionally (C) heating the reaction product from (B) to 125 to 280° C. The resulting polytetrahydrobenzoxazines and bistetrahydrobenzoxazines are suitable as fuel or lubricant additives, especially as detergent additives for diesel fuels.
摘要:
A synergistic mixture comprising from 1 to 99.9% by weight of compounds having structural elements (I) in which the free valencies on the oxygen atom and on the nitrogen atom may be combined to form a five-, six- or seven-membered ring and the benzene ring may also bear substituents at one or more of the free positions, and from 0.1 to 99% by weight of sulfur-containing organic compounds with antioxidant action. This synergistic mixture is suitable as a stabilizer for stabilizing inanimate organic material, especially mineral oil products and fuels, against the action of light, oxygen and heat.
摘要:
A lubricating composition comprising a major amount of base oil and a minor amount of an additive package, wherein the additive package comprises (A) a friction modifier component selected from: (a) one or more a reaction products of an alcohol with a compound of the formula IV: wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl group having about 8 to about 22 carbon atoms; and (b) one or more compounds of the Formulae II-III: wherein R is as defined above and R2 and R3 are independently selected from hydrogen, C1-C18hydrocarbyl groups, and C1-C18hydrocarbyl groups containing one or more heteroatoms; and wherein R is as defined above; and X is an alkali metal, alkaline earth metal or ammonium cation and n is the valence of cation X; and (B) at least one dispersant.
摘要:
Provided is a method of identifying authenticity of oil by reacting oil marked by a Oil Marker Composition with a developer to develop a color and then measuring absorbance. According to the present invention, an oil maker capable of quantitatively and qualitatively measuring authenticity of oil due to a rapid reaction rate, excellent reproducibility, and distinct color development that may be observed by the naked eyes, and a method of identifying oil using the same.
摘要:
The invention relates to a high-temperature grease which is used inter alia in corrugated cardboard plants and comprises exclusively fluorine-free base oil.
摘要:
A lubricating composition comprising a major amount of base oil and a minor amount of an additive package, wherein the additive package comprises (A) a friction modifier component selected from: (a) one or more a reaction products of an alcohol with a compound of the formula IV: wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl group having about 8 to about 22 carbon atoms; and (b) one or more compounds of the Formulae II-III: wherein R is as defined above and R2 and R3 are independently selected from hydrogen, C1-C18hydrocarbyl groups, and C1-C18hydrocarbyl groups containing one or more heteroatoms; and wherein R is as defined above; and X is an alkali metal, alkaline earth metal or ammonium cation and n is the valence of cation X; and (B) at least one dispersant.
摘要:
An aqueous hydraulic fluid composition comprising (i) a salt of formic acid, and (ii) one or more lubricants such as a monovalent metal salt, ammonium, or amine salt of a dicarboxylic acid, is described in which the aqueous hydraulic fluid composition demonstrates increased thermal stability when exposed to elevated temperatures for a prolonged period of time while being able to tolerate the presence of 10% v/v synthetic seawater. The aqueous hydraulic fluid composition contains less than about 20% by weight (preferably none or substantially none) of an oil selected from the group consisting of mineral oils, synthetic hydrocarbon oils, and mixtures thereof. The hydraulic fluid preferably contains no glycols in some embodiments. The pH of the hydraulic fluid is preferably from 8 to 10 and is maintained by a buffer which preferably comprises borax in some embodiments.