摘要:
A synthetic traction fluid which is prepared by compounding as a base oil one or more of mono-, di-, and tri-esters represented by general formula (I), (wherein Y represents one, two or more members selected for among formula (II) and (III), A' represents an ester bond of -COO- or -OOC, n represents 1-3, R1 represents one or two (the same or different) members selected from among a hydrogen atom and alkyl groups having 1 to 8 carbon atoms) or their derivatives. This fluid is used for power-transmitting devices, particularly traction driving devices.
摘要:
57 A cold rolling mill lubricant for steel sheets, contains a monoester oil represented by general formula (A): (wherein R 1 is an alkyl, alkenyl, hydroxyalkyl, or hydroxyalkenyl group having 7 or more carbon atoms, R 2 is an alkylene group, R 3 is an alkyl or phenyl group, and n is an integer of 1 to 5), and/or a diester oil represented by general formula (B): (wherein each R 4 or R 6 is independently an alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl group having 5 or more carbon atoms, R 5 is an alkylene group having 2 to 4 carbon atoms, and m is an integer of 1 or more). A method of manufacturing cold rolling milled steel sheets is also provided.
摘要:
To provide a lubricating oil composition for a shock absorber for preventing wearing a piston rod and a guide bush in a shock absorber, which composition lowers the friction coefficient at the interface between bronze and chromium and reduces wear area of bronze. The lubricating oil composition for a shock absorber contains (A) a base oil composed of a mineral oil and/or a synthetic oil, and (B) a polyhydric alcohol partial ester having a C10 to C20 fatty acid residue, in an amount of 0.05 mass% to 10 mass%, with respect to the total amount of the composition.
摘要:
The present invention provides a lubricating oil composition exhibiting more excellent flame retardancy and biodegradability. The biodegradable lubricating oil composition of the invention has flame retardancy and contains (1) a base oil containing a plant-derived oil in an amount of 60 mass% or more, and a polyol ester in an amount of 40 mass% or less, and (2) a polymethacrylate having a mass average molecular weight of 20,000 to 300,000 in an amount of 0.1 to 5 mass%.
摘要:
A biodegradable lubricating oil composition includes (A) an ester being obtained by reacting a saturated aliphatic carboxylic acid, a straight-chain aliphatic dicarboxylic acid and a polyhydric alcohol together, the ester having a kinematic viscosity in a range from 400 mm 2 /s to 1000 mm 2 /s at 40 degrees C and an acid value of 0.5 mgKOH/g or less; (B) an ester being obtained by reacting a straight-chain saturated aliphatic carboxylic acid with a polyhydric alcohol, the ester having an acid value of 0.5 mgKOH/g or less; and (C) a phosphate amine salt being obtained by reacting an acidic phosphate with an alkylamine.
摘要:
[Object] A low friction assembly is desired. [Solving Means] The present invention relates to a new low-friction lubrication assembly comprising a first member relatively slidable against a second member, the first member having chemical affinity with an OH-group on its sliding surface; and one or more oxygen containing compounds, provided on the sliding surface of the first member and being able to produce a tribofilm attached to the sliding surface of the first member through hydrogen bond interactions. Preferably the second member comprises a similar OH-terminated sliding surface wherein an oxygen containing compound (lubricant)-supported interface between the first and second sliding surfaces results in a H-and/or OH-terminated interface developing repulsive forces thereinbetween.
摘要:
Provided are compounds of formula wherein R1 is t-octyl, AR is phenyl, R2 is an alkyl substituted carboxyl and m is 0, 1, or 2. Lubricating oils and hydraulic fluids comprising a polyol ester lubricant in combination with one or more compounds of formula I and methods for their use are also provided.