公开(公告)号：US20210095219A1

公开(公告)日：2021-04-01

申请号：US16627861

申请日：2018-08-22

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Go WATANABE ,  Akihiro SHISHIKURA ,  Asami KAGA

IPC: C10M115/08 ,  C10M129/76

Abstract: A grease composition containing a base oil (A), a urea-based thickener (B), an antioxidant (C), and a rust inhibitor (D), wherein in a particle size distribution curve obtained by measuring the particle size of particles containing the urea-based thickener (B) in the grease composition on a volume basis with light scattering, a peak indicating the maximum frequency satisfies the following Requirements (I) and (II): (I) a particle size indicating the maximum frequency of the peak is 1.0 μm or less; and (II) a half width of the peak is 1.0 μm or less.