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Title:
LUBRICATING OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2020/085285
Kind Code:
A1
Abstract:
Provided is a lubricating oil composition containing a base oil (A), a neutral phosphorus compound (B), an acidic phosphorus compound (C), a sulfur compound (D), and at least one metal salt (E) selected from metal sulfonates, metal salicylates, and metal phenates, wherein the acidic phosphorus compound (C) content in terms of phosphorus atoms is 10-180 mass ppm based on the total amount of the lubricating oil composition, the sulfur compound (D) content in terms of sulfur atoms is 10-1000 mass ppm based on the total amount of the lubricating oil composition, and the metal salt (E) content in terms of metal atoms is 5-180 mass ppm based on the total amount of the lubricating oil composition.

Inventors:
TAMURA KAZUSHI (JP)
Application Number:
PCT/JP2019/041270
Publication Date:
April 30, 2020
Filing Date:
October 21, 2019
Export Citation:
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Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M141/10; C10M129/10; C10M129/54; C10M135/00; C10M135/10; C10M135/36; C10M137/00; C10M137/04; C10N20/00; C10N20/02; C10N30/06; C10N40/04; C10N40/08
Domestic Patent References:
WO2011080970A12011-07-07
WO2019167431A12019-09-06
WO2011080970A12011-07-07
Foreign References:
JP2003171684A2003-06-20
JP2015151490A2015-08-24
EP3760697A12021-01-06
US20030158050A12003-08-21
US20120277134A12012-11-01
US20140018271A12014-01-16
Other References:
ANONYMOUS: "Lubricant Additives:Use and Benefits", ATC-EUROPE, 1 August 2016 (2016-08-01), pages 1 - 7, XP093067160, Retrieved from the Internet [retrieved on 20230725]
ANONYMOUS: "Overbased Calcium Sulfonate (400 TBN)", BISLEY INTERNATIONAL, 1 January 2021 (2021-01-01), pages 1 - 2, XP093067168, Retrieved from the Internet [retrieved on 20230725]
ANONYMOUS: "Lobase C-4502 Neutral Calcium Sulfonate", LANXESS, 5 June 2017 (2017-06-05), pages 1 - 3, XP093067183, [retrieved on 20230725]
1 January 2010, SPRINGER VERLAG, ISBN: 978-1-4020-8661-8, article MORTIER ROY M., MALCOLM F. FOX, STEFAN T. ORSZULIK: "Chemistry and Technology of Lubricants, Third Edition", pages: 66 - 67, XP093017251
See also references of EP 3872151A4
Attorney, Agent or Firm:
KOBAYASHI Hiroshi et al. (JP)
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