| 摘要 |
PROBLEM TO BE SOLVED: To obtain a grease composition which stays at a position where a lubricant is required and does not flow out to other positions by blending a specific amount of various silicone oils with a composition containing a fluorine oil and a thickener to prevent oil separation of the oil content and syneresis. SOLUTION: A non-diffusive fluorine grease composition is prepared by blending 0.1-50% of various silicone oils with a fluorine grease, or a fluorine grease comprising a fluorine oil and a thickener. Preferably, a perfluoropolyether oil is used as the fluorine oil. Preferably, a silicone oil having a viscosity at 25 deg.C of 1-1,000 mm2/s, for example, is used as the silicone oil. As the thickener, a material selected from a fluororesin powder, silica, aluminum oxide, zinc oxide, boron nitrite, Ammelin (R) or the like is used. As the silicone oil to be added to the composition, dimethylsilicone, methylphenylsilicone, phenylmethylsilicone or the like is useful. |
