摘要:
The invention provides a refrigerator oil composition comprising a base oil of a mineral oil and/or a synthetic oil, and containing (a) a partial ester of a polyalcohol and a fatty acid and (b) an acid phosphate or its amine salt; and a refrigerator oil composition comprising a base oil of a mineral oil and/or a synthetic oil, and containing any of (a) acid phosphates or their amine salts, (b) acetylene glycol alkylene oxide adducts, (c) potassium salts of fatty acids, etc., (d) organic acids, and (e) fatty acid amides. The refrigerator oil compositions have good lubricity and are especially effective for reducing the friction in both the oil region and the extreme-pressure region in the sliding area between aluminium materials and steel materials.
摘要:
This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity and (A) a di or trihydrocarbyl phosphite, (B) at least one reaction product of a di or trihydrocarbyl phosphite and sulfur or a source of sulfur; at least one di or trihydrocarbyl monothiophosphate; or salt thereof, and (C) a salt of a hydrocarbyl phosphoric acid ester. In one embodiment, the lubricant composition contains less than 0.1% phosphorus or less than about 0.75% borated dispersant. This combination of phosphorus compounds provides antiwear and thermal stability to lubricants, even at low phosphorus levels. The lubricating compositions containing the combination of the phosphorus compounds has low corrosivity to copper and low odor as well.
摘要:
A lubricating oil composition which comprises a base oil, (A) a specific alkali metal salicylate derivative, a specific alkaline earth metal salicylate derivative and/or their (per)basic salt in an amount of 0.005 to 5 mass % in terms of the amount of the metal element and (B) a phosphorus-containing wear inhibitor in an amount of 0.005 to 0.2 mass % in terms of the amount of phosphorus, has a total sulfur content of 0.3 mass % or less, and satisfies specific requirements, all the percentages being relative to the total amount of the composition. The lubricating oil composition is a low sulfur lubricating oil which is extremely excellent in wear inhibiting property and also excellent in long drain property and the like, and thus can be suitably used in particular for an internal combustion engine.
摘要:
A lubricating oil composition is provided containing a major amount of a lubricating oil base oil and a minor amount of an additive combination containing (i) a carboxylic acid-based or carboxylic acid ester based anti-rust agent; (ii) at least one type of amine selected from among the group comprising (A) the alkyl amines which can be represented by general formula (1) (R )nNH3-n (1) wherein R represents a saturated or unsaturated alkyl group which has from 12 to 30 carbon atoms, and n is an integer of value 1 or 2; and (B) the N-alkylpolyalkylenediamines which can be represented by general formula (2) R NH(CH2)mNH2 (2) wherein R represents a saturated or unsaturated alkyl group which has from 12 to 30 carbon atoms, and m is an integer of value from 2 to 5.
摘要:
The invention relates to a novel emulsified composition comprising (a) major amount of an aqueous phase, (b) a minor amount of an organic phase and (c) a minor but effective amount of at least one emulsifier to emulsify the aqueous and organic phase resulting in a water in oil emulsified lubricants, in particular an emulsified greases. Further, the present invention provides a process for making the emulsified compositions.
摘要:
A threaded joint for steel pipe, comprising a pin and a box allowed to be fitted to each other, wherein a porous zinc or zinc alloy layer as a lower layer by a projection plating method and a solid lubrication film (film containing lubricating powder in organic or inorganic binder) or a liquid lubricating film not containing heavy metal powder (example: liquid film formed mainly of high base organic metallic salt such as high base sulphonate) as an upper layer are provided on the thread part and the metal contact part without thread of at least either of the pin and box, whereby the threaded joint can provide excellent seizure resistance, corrosion resistance, and airtightness even after exposed to high temperature, and is allowed to be tightened and loosened repeatedly in a hot oil well without using compound grease containing heavy metal powder.
摘要:
The present invention generally pertains to a power transmission fluid composition comprising: (a) a major amount of lubricating oil; (b) an oil soluble phosphorus compound; (c) an ashless dispersant; and (d) an amine (i.e., alkyl primary amine) having the following Structure I: R-NH2 wherein R is about a C8 to C30 alkyl. Optionally, the power transmission fluid composition may include an amine containing friction modifier.
摘要:
A method for the mechanical working of metals and alloys which comprises conducting the mechanical working in the presence of an aqueous cooling lubricant having a pH of 6-10 and containing a phosphate ester of the formula R 1 (oxyalkylene) n OP(O)(X)(OH) (I), or (HO) 2 (O)P-(oxyalkylene) m OP(O)(OH) 2 (II), where R 1 is an alkyl group with 1-12 carbon atoms, oxyalkylene is a group containing 2-4 carbon atoms, n is a number from 1-20, X is hydroxyl, R 1 O or R 1 (oxyalkylene) n O, where R 1 , oxyalkylene and n have the meanings mentioned above, and m is a number from 4-40, or a salt thereof, and an alkenyl substituted succinic acid of the formula HOOCCH(R 2 )CH 2 COOH (III), where R 2 is an alkenyl group with 4-10 carbon atoms, or a salt thereof, or a mixture of any of the compounds I, II and III.
摘要:
A biodegradable penetrating lubricant, comprised of: (A) at least one triglyceride oil of formula (I), wherein R , R , and R are aliphatic hydrocarbyl groups containing from about 7 to about 23 carbon atoms; (B) an organic solvent selected from the group comprising: (1) ethyl lactate; (2) methyl ester; and (3) combinations of 1 and 2; (C) an antioxidant; and, (D) a corrosion inhibitor. Optionally, the lubricant may further an additive selected from the group comprising: (E) a viscosity modifier; (F) an anti-wear inhibitor; and, (G) an emulsifier.
摘要:
Concentrated lubricant compositions, dilutable for use in high temperature metal forming processes and containing a triaryl phosphate ester; a non-ionic and/or amphoteric surfactant, an organic sulfur-containing extreme pressure additive, an amine salt of an organic acid, and, optionally, sodium thiosulfate, exhibit improved performance in forming operations and produce parts with less part to part variation.