GREASE COMPOSITION FOR RESIN LUBRICATION

• Main Authors: TSUTSUI DAISUKE, SHIBATA AKIRA, SOMA MINAMI
• Format: Patent
• Language: English; Japanese
• Published: 27.09.2021
• Subjects: CHEMISTRY; FUELS; LUBRICANTS; LUBRICATING COMPOSITIONS; METALLURGY; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION

To provide a grease composition for resin lubrication that is capable of suppressing slippage of a lubricating area of a reduction gear of, e.g., a power steering for automobiles at the time when it is not assisted by an electric motor, the slippage of the gear being suppressed by increasing the static friction coefficient of the lubricated area when the gear is not assisted by the motor, while preventing the increase of the dynamic friction coefficient of the lubricating area and maintaining the dynamic friction coefficient at around the same level without being dragged by the increase of the static friction coefficient.SOLUTION: A grease composition for use in lubrication between resin members or between a resin member and a member made of a material other than resin contains, with respect to the total mass of the composition, more than 0.5 mass% and less than 7.5 mass% of a solid organic molybdenum compound.SELECTED DRAWING: None 【課題】潤滑部の静摩擦係数を高くし、且つ、高くした静摩擦係数に引きずられて動摩擦係数が上昇することを抑制し、そのままある程度低く維持することで、モーターによる非アシスト時に、減速機の潤滑部のすべりを抑制した樹脂潤滑用グリース組成物を提供すること。【解決手段】樹脂製部材と樹脂製部材との潤滑又は樹脂製部材と他の素材製の部材との潤滑に使用するためのグリース組成物であって、組成物の全質量に対して、０．５質量％を超え、７．５質量％未満の固体有機モリブデン化合物を含有する、前記グリース組成物。【選択図】なし