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.

公开(公告)号：US12146116B2

公开(公告)日：2024-11-19

申请号：US18252092

申请日：2021-11-30

Applicant: SHELL OIL COMPANY

Inventor： Kengo Suzuki ,  Kunitoshi Abe

IPC: C10M145/30 ,  C10M107/02 ,  C10M129/70 ,  C10M145/32 ,  C10M169/04 ,  C10N20/02 ,  C10N30/00 ,  C10N30/02 ,  C10N40/25

Abstract: The present invention provides a lubricating oil composition comprising: (A) a lubricant base oil including at least one type selected from mineral oil, PAO, and GTL (gas-to-liquid) base oils; (B) a compound having a structure obtained by independently subjecting propylene oxide to addition polymerization with an alcohol or a structure obtained by subjecting a combination of propylene oxide with ethylene oxide and/or butylene oxide to addition polymerization with an alcohol, and being configured so that polyalkylene glycol (PAG) with an oxygen/carbon weight ratio of 0.35 or more and less than 0.45 and/or one or both terminal hydroxyl groups in the polyalkylene glycol (PAG) are blocked; and (C) a fatty acid ester having an oxygen/carbon weight ratio of 0.05 to 0.35.