公开(公告)号：US11091719B2

公开(公告)日：2021-08-17

申请号：US16494584

申请日：2018-04-03

Applicant: DAICEL CORPORATION

Inventor： Norihiro Kimoto ,  Tomohiro Goto

IPC: C10M169/04 ,  C10M105/14 ,  C10M125/02 ,  C10M173/02 ,  C10N20/06 ,  C10N40/30

Abstract: The present invention provides a lubricant composition suitable for reducing friction between sliding members such as those within a pump for circulating a heat medium of a heat pump device, and a lubricating system using the composition as a heat medium. A lubricant composition 10 of the present invention comprises: an antifreeze liquid 11 containing ethylene glycol; and 0.01 mass % or less of nanodiamond particles 12. The nanodiamond particles 12 are preferably detonation nanodiamond particles. The lubricant composition 10 is preferably a liquid composition for a heat pump. In addition, the lubricating system of the present invention uses the lubricant composition 10 as a heat medium.

公开(公告)号：US11739279B2

公开(公告)日：2023-08-29

申请号：US17275080

申请日：2019-08-28

Applicant: DAICEL CORPORATION

Inventor： Norihiro Kimoto ,  Tomohiro Goto ,  Hiroki Kageyama

IPC: C10M125/02 ,  C10M169/04 ,  F16C33/04 ,  C10N30/06 ,  C10N20/06 ,  C10N50/00 ,  C10N40/02

CPC classification number: C10M125/02 ,  C10M169/04 ,  F16C33/043 ,  C10M2201/041 ,  C10N2020/06 ,  C10N2030/06 ,  C10N2040/02 ,  C10N2050/015

Abstract: Provided is an initial break-in lubricant composition capable of easily and economically reducing the coefficient of friction of a sliding portion. The initial break-in lubricant composition includes an organic dispersion medium and nanocarbon particles in a quantity from 0.1 to 2000 ppm by mass. The nanocarbon particles are preferably particles of one or more nanocarbon material(s) selected from the group consisting of: nanodiamonds, fullerenes, graphene oxide, nanographite, carbon nanotubes, carbon nanofilaments, onion-like carbon, diamond-like carbon, amorphous carbon, carbon black, carbon nanohorns, and carbon nanocoils.

公开(公告)号：US11261517B2

公开(公告)日：2022-03-01

申请号：US16665581

申请日：2019-10-28

Applicant: DAICEL CORPORATION ,  TOHOKU UNIVERSITY

Inventor： Norihiro Kimoto ,  Tomohiro Goto ,  Koshi Adachi ,  Tsubasa Takahashi

IPC: C23C16/26 ,  C23C14/16 ,  C23C26/00 ,  F16C29/02 ,  C23C28/04 ,  C23C24/02 ,  C23C14/06 ,  F16J9/26 ,  C01B32/05 ,  C23C14/32 ,  F16C29/04 ,  F16C29/00 ,  C01B32/20 ,  C01B32/25 ,  C10M103/02

Abstract: A sliding member includes a carbon transfer layer and can superiorly effectively decrease friction and reduce wear. A method produces the sliding member. The sliding member includes a substrate and a carbon transfer layer. The carbon transfer layer is disposed on the surface of the substrate and includes both sp2 bonded carbon and sp3 bonded carbon. The carbon transfer layer preferably has a ratio sp3/(sp2+sp3) of the sp3 bonded carbon to the totality of the sp2 bonded carbon and the sp3 bonded carbon of 0.1 or more.

公开(公告)号：US11124735B2

公开(公告)日：2021-09-21

申请号：US16762550

申请日：2018-10-25

Applicant: DAICEL CORPORATION ,  TOHOKU UNIVERSITY

Inventor： Norihiro Kimoto ,  Tomohiro Goto ,  Koshi Adachi ,  Tsubasa Takahashi

IPC: C10M173/02 ,  C10M125/02 ,  C10N40/10

Abstract: The present invention provides an initial running-in agent composition suitable for forming a low-friction surface (running-in surface) on a sliding member, such as a hard carbon film, in a system in which water is used as a lubricant. The initial running-in agent composition (10) according to an embodiment of the present invention contains water 11 as a lubricant base and nanodiamond particles (12). In the initial running-in agent composition (10), a content of the water (11) is preferably 99 mass % or greater, and a content of the nanodiamond particles (12) is preferably 1.0 mass % or less.

公开(公告)号：US20200087594A1

公开(公告)日：2020-03-19

申请号：US16494584

申请日：2018-04-03

Applicant: DAICEL CORPORATION

Inventor： Norihiro Kimoto ,  Tomohiro Goto

IPC: C10M169/04 ,  C10M105/14 ,  C10M173/02 ,  C10M125/02

Abstract: The present invention provides a lubricant composition suitable for reducing friction between sliding members such as those within a pump for circulating a heat medium of a heat pump device, and a lubricating system using the composition as a heat medium. A lubricant composition 10 of the present invention comprises: an antifreeze liquid 11 containing ethylene glycol; and 0.01 mass % or less of nanodiamond particles 12. The nanodiamond particles 12 are preferably detonation nanodiamond particles. The lubricant composition 10 is preferably a liquid composition for a heat pump. In addition, the lubricating system of the present invention uses the lubricant composition 10 as a heat medium.

公开(公告)号：US11124731B2

公开(公告)日：2021-09-21

申请号：US16494584

申请日：2018-04-03

Applicant: DAICEL CORPORATION

Inventor： Norihiro Kimoto ,  Tomohiro Goto

IPC: C10M169/04 ,  C10M105/14 ,  C10M125/02 ,  C10M173/02 ,  C10N20/06 ,  C10N40/30

Abstract: The present invention provides a lubricant composition suitable for reducing friction between sliding members such as those within a pump for circulating a heat medium of a heat pump device, and a lubricating system using the composition as a heat medium. A lubricant composition 10 of the present invention comprises: an antifreeze liquid 11 containing ethylene glycol; and 0.01 mass % or less of nanodiamond particles 12. The nanodiamond particles 12 are preferably detonation nanodiamond particles. The lubricant composition 10 is preferably a liquid composition for a heat pump. In addition, the lubricating system of the present invention uses the lubricant composition 10 as a heat medium.