Title:
LUBRICATING OIL COMPOSITION FOR SHOCK ABSORBER, FRICTION REDUCTION METHOD FOR SHOCK ABSORBER AND METHOD FOR MANUFACTURING LUBRICATING OIL COMPOSITION FOR SHOCK ABSORBER
Document Type and Number:
WIPO Patent Application WO/2019/093238
Kind Code:
A1
Abstract:
The present invention pertains to: a lubricating oil composition for a shock absorber; a friction reduction method for a shock absorber; and a method for manufacturing a lubricating oil composition for a shock absorber. The lubricating oil composition according to the present invention for a shock absorber is characterized by comprising a base oil, a zinc primary dialkyldithiophosphate having an alkyl chain length of 6 or less and oleic acid. According to a preferred embodiment of the present invention, use of the lubricating oil composition of the present invention for a shock absorber makes it possible to optimize friction characteristics in a sliding position between hard materials, for example, a rod and a bush and, moreover, friction characteristics in a sliding position between a hard material and a soft material, for example, a rod and an oil seal and a cylinder and a piston band, in an oil shock absorber.
Inventors:
HAMACHI TATSUYA (JP)
SAKANOUE SHUICHI (JP)
SAKANOUE SHUICHI (JP)
Application Number:
PCT/JP2018/040821
Publication Date:
May 16, 2019
Filing Date:
November 02, 2018
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M169/04; C10M129/40; C10M137/10; C10N10/04; C10N20/02; C10N30/06; C10N40/06; F16F9/32
Domestic Patent References:
| WO2014010697A1 | 2014-01-16 |
Foreign References:
| JPS55165996A | 1980-12-24 | |||
| JP2006321449A | 2006-11-30 | |||
| JP2015010171A | 2015-01-19 | |||
| JP2015134899A | 2015-07-27 |
Attorney, Agent or Firm:
KOBAYASHI Hiroshi et al. (JP)
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