Lubricant composition
AssigneeIdemitsu Kosan Co., Ltd.
InventorsShinji AOKI, Shota HIRAKAWA
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Abstract
Provided is a lubricating oil composition comprising a base oil (A) containing a polyalkylene glycol (A1) and a polyol ester (A2), a phosphorus-based rust inhibitor (B), and an antioxidant (C) containing an amine-based antioxidant (C1). The lubricating oil composition exhibits a strong effect for suppressing sludge sedimentation even when used for an extended period of time in a high-temperature environment, and has excellent demulsibility and rust preventive properties, and therefore, can be suitably used in turbomachinery, compressors, hydraulic equipment, and machine tools.
Claims13
A lubricating oil composition, comprising:
- (A) a base oil (A) comprising a polyalkylene glycol (A1) and a polyol ester (A2);
- (B) a phosphorus-based rust inhibitor (B);
- and
- (C) an antioxidant (C) comprising an amine-based antioxidant (C1).
Dependencies are inferred from the claim text.