Title:
LUBRICANT OIL
Document Type and Number:
WIPO Patent Application WO/2017/158894
Kind Code:
A1
Abstract:
[Problem] To provide a lubricant oil that is able to achieve low frictional properties in fluid lubrication and boundary lubrication without using any additives. [Solution] The present invention has a normalized peak intensity ratio, as obtained by a resonant shear measuring method, of at least 0.4 at a surface-to-surface distance not less than 20 nm, and of at most 0.2 under a load of greater than 0 mN and at most 5 mN. The present invention preferably includes: a low-viscosity base oil having a bulk viscosity not higher than a prescribed value; and a high-viscosity base oil having a bulk viscosity at least 10 times as high as that of the low-viscosity base oil. Furthermore, the low-viscosity base oil preferably has a bulk viscosity of 100 mPa·s or lower. The high-viscosity base oil preferably has a viscosity in boundary lubrication lower than that of the low-viscosity base oil.
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Inventors:
KURIHARA KAZUE (JP)
MIZUKAMI MASASHI (JP)
SHIRASAWA DAISUKE (JP)
MIZUKAMI MASASHI (JP)
SHIRASAWA DAISUKE (JP)
Application Number:
PCT/JP2016/079171
Publication Date:
September 21, 2017
Filing Date:
September 30, 2016
Export Citation:
Assignee:
UNIV TOHOKU (JP)
International Classes:
C10M171/02; C10N20/02; C10N30/06; C10N40/25
Foreign References:
| JPS5281080A | 1977-07-07 | |||
| JPH09208976A | 1997-08-12 | |||
| JPS328572B1 | ||||
| JPH09118889A | 1997-05-06 | |||
| JPS61287986A | 1986-12-18 |
Other References:
MASASHI MIZUKAMI ET AL: "Molecular Level Elucidation of Lubrication Properties of Liquids", OLEOSCIENCE, vol. 15, no. 5, 1 January 2015 (2015-01-01), pages 205 - 211, XP055602838
KAZUE KURIHARA: "Kyoshin-zuri Sokuteiho ni yoru Junkatsuyu Hyoka", PROCEEDINGS OF JAST TRIBOLOGY CONFERENCE 2014 AUTUMN, 2014, pages 88 - 89
JUN'ICHI WATANABE ET AL: "Kyoshin-zuri Sokuteiho ni yoru Junkatsuyu Nano Hakumaku no Tokusei Hyoka to Tribology Kaiseki", POLYMER PREPRINTS, vol. 62, no. 1, 2013, Japan, pages 571
KAZUE KURIHARA: "Kyoshin-zuri Sokuteiho ni yoru Junkatsuyu Hyoka", PROCEEDINGS OF JAST TRIBOLOGY CONFERENCE 2014 AUTUMN, 2014, pages 88 - 89
JUN'ICHI WATANABE ET AL: "Kyoshin-zuri Sokuteiho ni yoru Junkatsuyu Nano Hakumaku no Tokusei Hyoka to Tribology Kaiseki", POLYMER PREPRINTS, vol. 62, no. 1, 2013, Japan, pages 571
Attorney, Agent or Firm:
SUDA Atsushi et al. (JP)
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