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US 2026/0022305 A1Published application
Lubricating oil composition
AssigneeIdemitsu Kosan Co., Ltd.
InventorMasaya KUBOTA
Life of this patent
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Abstract
Provided is a lubricating oil composition containing: a base oil (A); and a metal-based detergent (B), wherein a content proportion of heavy fraction (Hf) having 32 or more carbon atoms in the component (A) is 14.0 mass % or more based on the total amount of the component (A), the component (B) contains an overbased calcium salicylate (B1) with a base number of 100 mg KOH/g or more, and a content proportion of the component (B1) in the component (B) is 35.0 mass % or more based on the total amount of the component (B).
Claims15
A lubricating oil composition comprising:
- a component (A) which is a base oil;
- and a component (B) which is a metal-based detergent,
- wherein a content proportion of a heavy fraction (Hf) having 32 or more carbon atoms in the component (A) is 14.0 mass % or more based on a total amount of the component (A),
- the component (B) comprises an overbased calcium salicylate (B1) with a base number of 100 mg KOH/g or more, and
- a content proportion of the component (B1) in the component (B) is 35.0 mass % or more based on a total amount of the component (B).
2 more elements
Dependencies are inferred from the claim text.