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US 2025/0084339 A1Published application
Lubricating oil composition
AssigneeIdemitsu Kosan Co., Ltd.
InventorsDaisuke NAKAUE, Masaya KUBOTA
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Abstract
A lubricating oil composition may have excellent fuel economy and high shear stability. Such a lubricating oil composition may include: a comb-like polymer (A1) having a weight average molecular weight (Mw) of less than 300,000; and a comb-like polymer (A2) having a Mw of at least 400,000. The (A1)/(A2) mass content ratio of the comb-like polymer (A1) to the comb-like polymer (A2) in terms of resin content may be at least 0.25.
Claims14
A lubricating oil composition, comprising:
- a base oil;
- a comb polymer (A1) having a weight-average molecular weight (Mw) of less than 300,000;
- and
- a comb polymer (A2) having a Mw of 400,000 or more,
- wherein an (A1)/(A2) mass content ratio in terms of resin content mass between the comb polymer (A1) and the comb polymer (A2) is 0.25 or more.
2 more elements
Dependencies are inferred from the claim text.