申请人:Citizen Watch Co., Ltd.
公开号:EP1632555A1
公开(公告)日:2006-03-08
The first lubricating oil composition of the invention comprises a polyol ester (A) as a base oil, a specific amount of a viscosity index improver (B) and a specific amount of an anti-wear agent (C), and the second lubricating oil composition of the invention comprises a paraffinic hydrocarbon oil (F) having at least 30 carbon atoms and a specific amount of a viscosity index improver (B), so that these compositions exert effects that they enable a life of watch battery to last long, they enable a watch to operate in the temperature range of -30 to 80°C with one kind of a lubricating oil, and they are free from change of properties over a long period of time. The third lubricating oil composition of the invention comprises an ether oil (G) as a base oil, a specific amount of an anti-wear agent (C) comprising a neutral phosphoric ester and/or a neutral phosphorous ester, and an antioxidant (E), so that this composition is free from change of properties over a long period of time and is favorable as a watch lubricating oil. The watch of the invention is a watch having a movable portion for which at least one composition selected from the above compositions is used.
本发明的第一种润滑油组合物包括作为基础油的多元醇酯(A)、一定量的粘度指数改进剂(B)和一定量的抗磨剂(C),本发明的第二种润滑油组合物包括至少有 30 个碳原子的石蜡烃油(F)和一定量的粘度指数改进剂(B)、因此,这些组合物的效果是:能延长手表电池的使用寿命,能使手表在-30 至 80°C 的温度范围内使用一种润滑油工作,并且在很长一段时间内性能不会发生变化。本发明的第三种润滑油组合物包括作为基础油的醚油 (G)、一定量的抗磨剂 (C)(包括中性磷酸酯和/或中性磷酯)和抗氧化剂 (E),因此这种组合物在很长一段时间内都不会改变性质,有利于用作手表润滑油。本发明的手表是一种具有活动部分的手表,其活动部分使用了至少一种选自上述组合物的组合物。