公开(公告)号：US20230323240A1

公开(公告)日：2023-10-12

申请号：US18020743

申请日：2021-08-10

Applicant: JTEKT CORPORATION ,  ENEOS CORPORATION

Inventor： Takeshi TSUDA ,  Yurie HAGINO ,  Kazumi SAKAI ,  Yusuke AYAME ,  Go TATSUMI ,  Kiyomi SAKAMOTO

IPC: C10M105/18 ,  C10M115/08 ,  C10M137/02 ,  C10M169/00 ,  C10M135/20 ,  C10M141/10 ,  C10M135/10

CPC classification number: C10M169/00 ,  C10M105/18 ,  C10M115/08 ,  C10M135/10 ,  C10M135/20 ,  C10M137/02 ,  C10M141/10 ,  C10M2207/0406 ,  C10M2215/1026 ,  C10M2219/044 ,  C10M2219/046 ,  C10M2219/08 ,  C10M2223/049 ,  C10N2030/43

Abstract: A grease composition including: a base oil; a thickener; a zinc sulfonate; a polysulfide; an overbased calcium sulfonate; and triphenyl phosphite, in which a proportion of the zinc sulfonate with respect to a total mass of the base oil and the thickener is 0.030 mass% to 0.045 mass% in terms of a zinc content, a proportion of the polysulfide with respect to the total mass of the base oil and the thickener is 0.16 mass% to 0.24 mass% in terms of a sulfur content, a proportion of the overbased calcium sulfonate with respect to the total mass of the base oil and the thickener is 0.010 mass% to 0.015 mass% in terms of a calcium content, and a proportion of the triphenyl phosphite with respect to the total mass of the base oil and the thickener is 0.24 mass% to 0.36 mass%.

公开(公告)号：US20230212474A1

公开(公告)日：2023-07-06

申请号：US17928054

申请日：2021-04-07

Applicant: JTEKT CORPORATION ,  ENEOS Corporation

Inventor： Koji YOSHIZAKI ,  Kazunori MIYAKE ,  Kazumi SAKAI ,  Yusuke AYAME ,  Kiyomi SAKAMOTO

IPC: C10M107/02 ,  C10M115/08 ,  C10M135/10 ,  C10M137/10 ,  C10M169/06 ,  F16C19/38 ,  F16C33/66

CPC classification number: C10M107/02 ,  C10M115/08 ,  C10M135/10 ,  C10M137/10 ,  C10M169/06 ,  F16C19/38 ,  F16C33/66 ,  C10M2205/0206 ,  C10M2215/1026 ,  C10M2223/045 ,  C10M2219/044 ,  C10N2010/04

Abstract: There is provided a grease composition for improving the chemical stability of the grease composition and increasing the fatigue life of a member in which the grease composition is used. The problems can be solved by a grease composition including a poly-α-olefin; a urea-based thickener; molybdenum dithiophosphate; and barium sulfonate, wherein a difference between an SP value of the urea-based thickener and an SP value of the poly-α-olefin is 3.5 or less.

公开(公告)号：US20230279308A1

公开(公告)日：2023-09-07

申请号：US18115818

申请日：2023-03-01

Applicant: ENEOS Corporation

Inventor： Takashi ARAI ,  Kazumi SAKAI ,  Shintaro KUSUHARA

IPC: C10M169/00 ,  C10M107/02 ,  C10M115/08 ,  C10M143/04 ,  C10M143/12 ,  C10M145/14 ,  C10M143/06 ,  C10M133/16 ,  C10M161/00

CPC classification number: C10M169/00 ,  C10M107/02 ,  C10M115/08 ,  C10M143/04 ,  C10M143/12 ,  C10M145/14 ,  C10M143/06 ,  C10M133/16 ,  C10M161/00 ,  C10M2205/0206 ,  C10M2215/1026 ,  C10M2205/024 ,  C10M2205/06 ,  C10M2209/084 ,  C10M2205/026 ,  C10M2215/28 ,  C10N2020/02

Abstract: The grease composition including: a base oil having a kinematic viscosity of 5 to 30 mm2/s at 100° C., a thickener, a polymer having a weight average molecular weight of 1,000 to 500,000, and an aliphatic amide compound. The grease composition is used for sliding between a metal member and a resin member, and capable of reducing friction between them.