Title:
LUBRICANT COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2023/189695
Kind Code:
A1
Abstract:
The present invention provides a lubricant composition which contains (A) a base oil, (B) a phosphite ester that has at least one sulfur atom-containing group having 2 to 20 carbon atoms, the group having at least one -(S)x- group (wherein x is an integer of 1 or more) between two adjacent carbon atoms in the structure of an alkyl group, (C) a thiadiazole compound and (D) a benzotriazole compound, wherein: the content of the component (C) is not less than 0.01% by mass but less than 0.60% by mass based on the total amount of the lubricant composition; and the content of the component (D) is not less than 0.02% by mass but less than 0.20% by mass based on the total amount of the lubricant composition.
Inventors:
TATSUMI HIROYUKI (JP)
MATSUBARA KAZUSHIGE (JP)
MATSUBARA KAZUSHIGE (JP)
Application Number:
PCT/JP2023/010504
Publication Date:
October 05, 2023
Filing Date:
March 17, 2023
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M169/04; F16H57/04; C10M105/34; C10M133/38; C10M135/36; C10M137/02; C10N30/06; C10N30/12; C10N40/04; C10N40/08; C10N40/25; C10N40/30
Domestic Patent References:
| WO2021193869A1 | 2021-09-30 | |||
| WO2015194236A1 | 2015-12-23 | |||
| WO2008038701A1 | 2008-04-03 |
Foreign References:
| JP2020172642A | 2020-10-22 | |||
| US5185090A | 1993-02-09 |
Attorney, Agent or Firm:
KOBAYASHI Hiroshi et al. (JP)
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