摘要:
In a reaction in which a boron trifluoride complex is used as a catalyst, the expensive and harmful boron trifluoride complex is separated from a reaction mixture containing the boron trifluoride complex by separating the boron trifluoride complex present in the reaction mixture by using a saturated hydrocarbon-based solvent.
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 provides a lubricating oil composition for a compression type refrigerator, containing a base oil having a kinematic viscosity of 2 to 1,000 mm 2 /s at 40°C. The base oil contains the following compounds (1) to (6) each having a molecular weight of 150 to 5,000 and a tertiary or quaternary carbon: (1) an alicyclic hydrocarbon, (2) a branched carboxylic acid ester of a polyhydric alcohol, (3) an alicyclic polycarboxylic acid ester, (4) polybutene, (5) an alkyl benzene and/or an alkyl naphthalene, and (6) a paraffinic mineral oil showing a 13 C-NMR spectrum in which an area of peaks at chemical shifts in the range of 30 to 100 ppm accounts for 5 to 40% of the entire peak area and/or a naphthenic mineral oil having a naphthene content of 30 to 70% by mass. The composition has excellent traction performance, lubricating properties and stability.
摘要:
A device-cooling base oil includes 30 mass% of at least one of an oleyl ester (e.g., oleate and oleyl alcohol ester) and oleyl ether. The oleyl ester and the oleyl ether each have 23 or more of a total number of a terminal methyl group, a methylene group and an ether group in a main chain and 1 or less of a total number of a methyl branch and an ethyl branch. The base oil has a kinematic viscosity at 40 degrees C in a range of 4 mm 2 /s to 30 mm 2 /s. A device-cooling oil provided by blending the base oil is excellent in electrical insulation properties and thermal conductivity, and thus is favorably usable for cooling a motor, a battery, an inverter, an engine, an electric cell or the like in an electric vehicle, a hybrid vehicle or the like.
摘要:
A lube base oil composition which comprises 80 to 98 wt.% (a) naphthenic synthetic lube base oil having a flash point of 140°C or higher and 2 to 20 wt.% (b) fatty acid ester of an alcohol having a gem-dimethyl structure, the ester having a flash point of 150°C or higher; or a lube base oil composition which comprises 85 to 99 wt.% (a) naphthenic synthetic lube base oil having a flash point of 140°C or higher and 1 to 15 wt.% (c) mineral oil having a dynamic viscosity as measured at 40°C of 0.9 to 9.6 mm2/s, a boiling point as measured at ordinary pressure of from 150 to 400°C, and a %CA as determined through ring analysis (n-d-M method) of 10% or lower. A traction drive fluid is provided which has a flash point of 150°C or higher, a high coefficient of traction at high temperatures, and excellent flow properties at low temperatures.
摘要:
A process for preparing economically and efficiently 2-methylene-3-methylbicyclo[2.2.1]heptane, 2,3-dimethylbicyclo[2.2.1]hept-2-ene, and so on, which are useful as raw materials in producing base oils for traction drive fluids to be used as lubricating oils for traction drive units, which process comprises reacting one or more C3-4 noncyclic olefins with cyclopentadiene to form one or more bicyclo[2.2.1]heptene derivatives and isomerizing the bicyclo[2.2.1]heptene derivatives in the presence of an isomerization catalyst to form one or more bicyclo[2.2.1]heptane derivatives.