US 12,264,293 B2
Grease composition
Go Watanabe, Chiyoda-ku (JP); Keisuke Inda, Chiyoda-ku (JP); and Kouji Takane, Chiyoda-ku (JP)
Assigned to IDEMITSU KOSAN CO., LTD., Chiyoda-ku (JP)
Appl. No. 18/552,377
Filed by IDEMITSU KOSAN CO., LTD., Chiyoda-ku (JP)
PCT Filed Mar. 31, 2022, PCT No. PCT/JP2022/016962
§ 371(c)(1), (2) Date Sep. 25, 2023,
PCT Pub. No. WO2022/211119, PCT Pub. Date Oct. 6, 2022.
Claims priority of application No. 2021-062426 (JP), filed on Mar. 31, 2021.
Prior Publication US 2024/0174943 A1, May 30, 2024
Int. Cl. C10M 169/06 (2006.01); C10N 20/02 (2006.01); C10N 20/06 (2006.01); C10N 30/06 (2006.01); C10N 50/10 (2006.01)
CPC C10M 169/06 (2013.01) [C10M 2215/30 (2013.01); C10M 2217/0456 (2013.01); C10N 2020/02 (2013.01); C10N 2020/06 (2013.01); C10N 2030/06 (2013.01); C10N 2050/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. 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.