润滑科技信息平台

润滑油组合物、缓冲器以及润滑油组合物的使用方法

专利摘要

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基本信息

专利类型:
发明专利
申请/专利号:
EP2021858252
申请日期:
2021-08-13
专利申请人:
分类号:
["C10M157/04","C10N20/02","C10N20/04","C10N30/00","C10N30/02","C10N30/08","C10N40/06","C10M143/00","C10M143/04","C10M145/14"]
发明/设计人:
SAKANOUE SHUICHI ， KOBAYASHI KENJI
权利要求: 1. A lubricating oil composition used for lubrication of a shock absorber, comprising: a base oil (A), a polyalkyl (meth)acrylate (B) having a weight average molecular weight of 150,000 to 900,000, and an olefin copolymer (C) having a weight average molecular weight of 100,000 or less.2. The lubricating oil composition according to claim 1, wherein the total content of the component (B) and the component (C) is 20.0 mass% or less based on the total amount of the lubricating oil composition.3. The lubricating oil composition according to claim 1 or 2, wherein a content ratio [(B)/(C)] by mass of the component (B) to the component (C) is 1/99 to 90/10.4. The lubricating oil composition according to any one of claims 1 to 3, wherein a content of the component (B) is 0.1 to 10.0 mass% based on the total amount of the lubricating oil composition.5. The lubricating oil composition according to any one of claims 1 to 4, wherein a content of the component (C) is 0.1 to 10.0 mass% based on the total amount of the lubricating oil composition.6. The lubricating oil composition according to any one of claims 1 to 5, wherein a weight average molecular weight of the component (C) is 8,000 or more and 100,000 or less.7. The lubricating oil composition according to any one of claims 1 to 6, wherein the component (C) comprises an ethylene propylene copolymer (C1).8. The lubricating oil composition according to any one of claims 1 to 7, wherein the total content of the components (A) to (C) is 80 to 100 mass% based on the total amount of the lubricating oil composition.9. The lubricating oil composition according to any one of claims 1 to 8, wherein a BF viscosity of the lubricating oil composition at -40°C is 1,500 mPa·s or less.10. Use of a lubricating oil composition, comprising applying the lubricating oil composition according to any one of claims 1 to 9 to lubrication of a shock absorber.