Title:
LUBRICATING OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2020/110243
Kind Code:
A1
Abstract:
A lubricating oil composition which contains: at least one base oil that is selected from the group consisting of mineral oil-based lubricating oils, synthetic oil-based lubricating oils and mixed oils of those lubricating oils; a zinc dialkyl dithiophosphate X represented by general formula (1); and an acidic phosphoric acid ester amine salt Y represented by general formula (2). This lubricating oil composition is configured such that: the content PX in the component X is from 0.06% by mass to 0.08% by mass in terms of the phosphorus concentration relative to the total mass of the composition; and the content PY in the component Y is from 0.015% by mass to 0.025% by mass in terms of the phosphorus concentration relative to the total mass of the composition.
Inventors:
SAITO TAKUMA (JP)
SAKAMOTO KOICHI (JP)
ASAMI NAOKI (JP)
AKAMATSU ATSUSHI (JP)
SAKAMOTO KOICHI (JP)
ASAMI NAOKI (JP)
AKAMATSU ATSUSHI (JP)
Application Number:
PCT/JP2018/043855
Publication Date:
June 04, 2020
Filing Date:
November 28, 2018
Export Citation:
Assignee:
COSMO OIL LUBRICANTS CO LTD (JP)
International Classes:
C10M141/10; C10M137/08; C10M137/10; C10N10/04; C10N30/06; C10N40/02; C10N40/04; C10N40/08
Domestic Patent References:
| WO2015025977A1 | 2015-02-26 |
Foreign References:
| JPH11189782A | 1999-07-13 | |||
| JPH11181463A | 1999-07-06 | |||
| JPH1017885A | 1998-01-20 | |||
| JPH07179875A | 1995-07-18 | |||
| JP2002038180A | 2002-02-06 | |||
| JPS63254196A | 1988-10-20 | |||
| JP2000001685A | 2000-01-07 | |||
| JP2001311090A | 2001-11-09 | |||
| JPH05255682A | 1993-10-05 | |||
| JPH02182787A | 1990-07-17 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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