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US 12,264,293 B2Granted
Grease composition
AssigneeIdemitsu Kosan Co., Ltd.
InventorsGo Watanabe, Keisuke Inda, Kouji Takane
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Abstract
A grease composition, containing a base oil (A), a urea-based thickener (B), and melamine cyanurate (C). Particles containing the urea-based thickener (B) in the grease composition satisfy the following requirement (I): the particles have an area-based arithmetic average particle diameter of 2.0 μm or less, as measured by a laser diffraction/scattering method.
Claims20
A grease composition, comprising:
- a base oil;
- a urea-based thickener;
- melamine cyanurate;
- and
- an oily agent;
- wherein a particle diameter of the melamine cyanurate is 5.0 μm or less, a content ratio of the urea-based thickener to the melamine cyanurate is in a range of 1.0 to 18.0 in terms of a mass ratio, the oily agent comprises one or more selected from the group consisting of a sarcosine derivative, an amine compound, a polyamide compound, and an ether compound, a content ratio of the melamine cyanurate to the oily agent is in a range of 0.3 to 3.0 in terms of a mass ratio, and particles comprising the urea-based thickener in the grease composition satisfy that the particles have an area-based arithmetic average particle diameter of 2.0 μm or less, as measured by a laser diffraction/scattering method.
3 more elements
Dependencies are inferred from the claim text.