| 摘要 |
PURPOSE:To obtain the title grease suitable for use in a helicoid portion and an iris diaphragm portion of a camera. a bearing mechanism of timepieces, and a mechanism portion of an electronic appliance and causing no dispersion of an oil component, by adding a fluorinated surfactant to a grease. CONSTITUTION:A grease comprising a lubricating base oil (e.g., diethylhexyl sebacate) and a thickener (e.g., a triurea compd.) blended therewith is blended with 0.01wt% or more fluorinated surfactant having a completely fluorinated fluorocarbon chain, such as a fluoroalkyl(2-10C)carboxylic acid, a perfluoroalkyl(4-12C)sulfonate, and a monoperfluoroalkyl(6-16C)ethyl phosphate. |
