基本信息:
- 专利标题： Hydraulic fluid composition for shock absorber
- 专利标题（中）：液压润滑油组合物
- 申请号：JP2009167632 申请日：2009-07-16
- 公开(公告)号：JP2011021111A 公开(公告)日：2011-02-03
- 发明人： TOCHIGI HIROSHI , TAKAHASHI KENJI
- 申请人： Cosmo Oil Lubricants Co Ltd , コスモ石油ルブリカンツ株式会社
- 专利权人： Cosmo Oil Lubricants Co Ltd,コスモ石油ルブリカンツ株式会社
- 当前专利权人： Cosmo Oil Lubricants Co Ltd,コスモ石油ルブリカンツ株式会社
- 优先权： JP2009167632 2009-07-16
- 主分类号： C10M169/04
- IPC分类号： C10M169/04 ; C10M101/02 ; C10M127/06 ; C10M137/04 ; C10M137/08 ; C10M137/10 ; C10M145/14 ; C10N20/00 ; C10N20/04 ; C10N30/00 ; C10N30/02 ; C10N30/06 ; C10N40/02 ; C10N40/04 ; F16F9/32
摘要：
PROBLEM TO BE SOLVED: To provide a hydraulic fluid composition having good low-temperature characteristics and low piping resistance, and a low rate of change in damping force with temperature change, moreover a low swelling rate (rate of volume change) of sealing materials.
SOLUTION: The hydraulic fluid composition comprises a base oil compounded of a polymethacrylate-based viscosity index improver whose weight-average molecular weight is 200,000-600,000 and an amine salt of an acidic phosphate ester, wherein the compounding ratio of the polymethacrylate-based viscosity index improver is 0.1-5.0 mass% to the total amount of the composition, and the compounding ratio of the amine salt of an acidic phosphate ester is 2.0-5.0 mass% to the total amount of the composition, and the other properties of the composition include a kinematic viscosity of 4-8 mm
2 /s at 40°C, a Brookfield viscosity of ≤1,000 mPa s at -30°C, an aniline point of 85-110°C, and a viscosity index of ≥150.
COPYRIGHT: (C)2011,JPO&INPIT
摘要（中）：
SOLUTION: The hydraulic fluid composition comprises a base oil compounded of a polymethacrylate-based viscosity index improver whose weight-average molecular weight is 200,000-600,000 and an amine salt of an acidic phosphate ester, wherein the compounding ratio of the polymethacrylate-based viscosity index improver is 0.1-5.0 mass% to the total amount of the composition, and the compounding ratio of the amine salt of an acidic phosphate ester is 2.0-5.0 mass% to the total amount of the composition, and the other properties of the composition include a kinematic viscosity of 4-8 mm
2 /s at 40°C, a Brookfield viscosity of ≤1,000 mPa s at -30°C, an aniline point of 85-110°C, and a viscosity index of ≥150.
COPYRIGHT: (C)2011,JPO&INPIT
要解决的问题：为了提供具有良好的低温特性和低管道阻力的液压组合物，以及随温度变化的阻尼力变化率低的低膨胀率（体积变化率） 密封材料。 解决方案：液压流体组合物包含基于重均分子量为200,000-600,000的聚甲基丙烯酸酯粘度指数改进剂的基油和酸性磷酸酯的胺盐，其中聚甲基丙烯酸酯 - 基于粘度指数的改性剂相对于组合物的总量为0.1〜5.0质量％，酸性磷酸酯的胺盐的配合比例相对于组合物的总量为2.0〜5.0质量％，其它性质 该组合物包括在40℃下的运动粘度为4-8mm，SPF为-30,000℃时为1.6mPa·s，苯胺点为85-110℃， 粘度指数≥150。 版权所有（C）2011，JPO＆INPIT
公开/授权文献:
- JP5295892B2 Shock absorber hydraulic oil composition 公开/授权日：2013-09-18