BASE OIL FOR COOLING OF DEVICE, DEVICE-COOLING OIL CONTAINING THE BASE OIL, DEVICE TO BE COOLED BY THE COOLING OIL, AND DEVICE COOLING METHOD USING THE COOLING OIL
申请人:Tsubouchi Toshiyuki
公开号:US20120283162A1
公开(公告)日:2012-11-08
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.
A lubricating oil composition of the invention contains a first base oil having a kinematic viscosity at 100 degrees C in a range from 0.6 mm2/s to 3.5 mm2/s and a first poly(meth)acrylate having a mass average molecular weight in a range from 3×104 to 5×104.
Disclosed is a solid soap preparation which can dissolve very quickly when it comes into contact with water and which enables exact dosing of a specific amount of soap. The soap preparation contains air bubbles and thus exhibits a certain degree of elasticity and plasticity.