LUBRICANT COMPOSITION AND METHOD FOR PRODUCING SAME

Title:

LUBRICANT COMPOSITION AND METHOD FOR PRODUCING SAME

Document Type and Number:

WIPO Patent Application WO/2020/085228

Kind Code:

A1

Abstract:

The lubricant composition according to the present invention contains: a base oil (A); at least one type of calcium-based detergent (B) selected from (B1) calcium sulfonate having a base number of 5.00 mg KOH/g to 100 mg KOH/g, (B2) calcium salicylate having a branched-chain acyclic hydrocarbon group, and (B3) overbased calcium phenate having a branched-chain acyclic hydrocarbon group; and at least one type of ashless detergent (C) selected from (C1) a hindered amine compound having one piperidine-derived backbone per molecule, and (C2) a specific diethanolamine compound. The calcium atom content of the lubricant composition is 100 mass ppm to 600 mass ppm with respect to the total mass of the lubricant composition. The mass ratio (NC/CaB) of the nitrogen atom content (NC) of the ashless detergent (C) to the calcium atom content (CaB) of the calcium-based detergent (B) is 1.3–3.1.

Inventors:

OKI HIROSHI (JP)

Application Number:

PCT/JP2019/041046

Publication Date:

April 30, 2020

Filing Date:

October 18, 2019

Export Citation:

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Assignee:

IDEMITSU KOSAN CO (JP)

International Classes:

C10M133/08; C10M133/40; C10M135/10; C10M159/22; C10N20/00; C10N30/00; C10N30/04; C10N40/25

Domestic Patent References:

WO2018043495A1

2018-03-08

Foreign References:

JP2017149830A	2017-08-31
JPH05105893A	1993-04-27
JP2000063869A	2000-02-29
JP2000256690A	2000-09-19

Other References: