| 摘要 |
PROBLEM TO BE SOLVED: To obtain an electroconductive lubricating composition for providing a bearing during in the operation with proper electroconductivity. SOLUTION: This composition comprises a lubricant base oil, a polymer thickening agent, an electroconductive component and another additive which is well-known by itself and is used for a lubricating grease composition. The composition is composed of a mixture of a propylene copolymer or homopolymer having >=200,000 weight-average molecular weight and a propylene copolymer or homopolymer having <100,000 weight-average molecular weight. The electroconductive component is selected from electroconductive solids such as a metal-containing additive, especially an organometallic compound/an organobismuth compound, an antistatic agent, a soft metal particle, silver, copper, graphite, bismuth and niobium sulfide (IV). |
