公开(公告)号：US11434445B2

公开(公告)日：2022-09-06

申请号：US17417157

申请日：2019-12-23

Applicant: SHELL OIL COMPANY

Inventor： Yoshitomo Fujimaki ,  Hiroki Yano ,  Kunitoshi Abe

IPC: C10L1/16 ,  C10M107/14 ,  C10M133/20 ,  C10M169/04 ,  C10N20/02 ,  C10N20/04 ,  C10N30/02 ,  C10N30/06 ,  C10N40/02 ,  C10N50/10

Abstract: The invention provides a grease composition for a ball joint which has a low friction coefficient under a load from normal temperatures to high temperatures, a small difference between static friction and dynamic friction, and little change in the friction coefficient even after repeated operation. TO this end, the invention provides a grease composition for a ball joint comprising: (i) a polyisoprene rubber and/or (ii) a polyisoprene rubber viscous material; a specific aliphatic amide and/or a specific aliphatic bisamide; and a specific urea compound.