公开(公告)号：US20230348808A1

公开(公告)日：2023-11-02

申请号：US18349809

申请日：2023-07-10

Applicant: DAICEL CORPORATION

Inventor： Norihiro KIMOTO ,  Tomohiro GOTO ,  Hiroki KAGEYAMA

IPC: C10M125/02 ,  C10M169/04 ,  F16C33/04

CPC classification number: C10M125/02 ,  C10M169/04 ,  F16C33/043 ,  C10N2030/06

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：US20240240101A1

公开(公告)日：2024-07-18

申请号：US18561350

申请日：2022-05-11

Applicant: DAICEL CORPORATION ,  DAIKIN INDUSTRIES, LTD.

Inventor： Norihiro KIMOTO ,  Hisayoshi ITO ,  Kouichi UMEMOTO ,  Takeru KASHIWAGI ,  Daisuke SHIRO ,  Hidekazu TAKEUCHI ,  Hideki MATSUURA ,  Shogo MOROE ,  Arisa KAWAE ,  Masaru TANAKA

IPC: C10M125/02 ,  C10M171/00 ,  C10N20/04 ,  C10N20/06 ,  C10N30/06 ,  C10N40/30

CPC classification number: C10M125/02 ,  C10M171/008 ,  C10M2201/041 ,  C10N2020/04 ,  C10N2020/06 ,  C10N2030/06 ,  C10N2040/30

Abstract: Provided is a composition for a refrigeration machine capable of reducing a friction coefficient in friction between sliding members in a refrigeration machine, and a composition kit for a refrigeration machine for providing the composition for a refrigeration machine. A composition for a refrigeration machine of the present disclosure includes a refrigeration machine oil, nanodiamond particles dispersed in the refrigeration machine oil, and a dispersant. The refrigeration machine oil preferably contains a polyvinyl ether, a polyol ester, a polyalkylene glycol, an alkylbenzene, or a mineral oil. The composition kit for a refrigeration machine of the present disclosure includes a refrigeration machine oil (A) containing a base oil and nanodiamond particles dispersed in the base oil, and a refrigerant (B).

公开(公告)号：US20210261878A1

公开(公告)日：2021-08-26

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

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：US20220259048A1

公开(公告)日：2022-08-18

申请号：US17605596

申请日：2020-05-20

Applicant: DAICEL CORPORATION

Inventor： Norihiro KIMOTO ,  Kouichi UMEMOTO ,  Takeru KASHIWAGI

IPC: C01B32/28 ,  C08K3/04 ,  C08K9/06 ,  C08K5/101 ,  C09C3/04 ,  C09C3/08 ,  C09C3/12

Abstract: Provided is a nanodiamond dispersion composition having excellent dispersibility of nanodiamond particles in an organic dispersion medium even when the organic dispersion medium has a small SP value. The nanodiamond dispersion composition according to an embodiment of the present invention includes an organic dispersion medium, nanodiamond particles dispersed in the organic dispersion medium, and a fatty acid ester dispersing agent. The fatty acid ester dispersing agent preferably has a mass loss rate of 20% or less when held in an air atmosphere at a temperature of 200° C. for 180 minutes. The fatty acid ester dispersing agent preferably has an acid value of 40 mgKOH/g or less.

公开(公告)号：US20200339908A1

公开(公告)日：2020-10-29

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

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：US20190218475A1

公开(公告)日：2019-07-18

申请号：US16301932

申请日：2017-02-21

Applicant: DAICEL CORPORATION ,  TOHOKU UNIVERSITY

Inventor： Norihiro KIMOTO ,  Hisayoshi ITO ,  Ming LIU ,  Koshi ADACHI ,  Hirotsuna SATO

IPC: C10M173/02 ,  C10M103/02

CPC classification number: C10M173/02 ,  C10M103/02 ,  C10M2201/02 ,  C10M2201/041 ,  C10N2220/082 ,  C10N2230/06 ,  C10N2250/12

Abstract: A water lubricant composition (10) of the present invention contains water (11) as a lubricating base material and ND particles (12), which are hydrogen-reduced nanodiamond particles. The content of the water (11) in the water lubricant composition (10) is, for example, 90% by mass or more. The content of the ND particles (12) in the water lubricant composition (10) is, for example, 0.1% by mass or less. The water lubricant composition (10) is suitable for achieving low friction in water lubrication. A water lubricating system of the present invention includes the water lubricant composition (10) which is being used for the lubrication of a SiC member and/or a SiO2 member.

公开(公告)号：US20230331959A1

公开(公告)日：2023-10-19

申请号：US18034590

申请日：2021-10-06

Applicant: DAICEL CORPORATION

Inventor： Norihiro KIMOTO ,  Kouichi UMEMOTO ,  Takeru KASHIWAGI

IPC: C08K7/18 ,  C08K5/101 ,  C08K9/04

CPC classification number: C08K7/18 ,  C08K5/101 ,  C08K9/04 ,  C08K2201/011 ,  C08K2201/005

Abstract: Provided is a nanodiamond dispersion composition having excellent dispersibility of nanodiamond particles in an organic dispersion medium. A nanodiamond dispersion composition including an organic dispersion medium, nanodiamond particles dispersed in the organic dispersion medium, and a fatty acid ester dispersing agent, the nanodiamond particles being surface-modified by a surface-modifying group or compound containing an organic group. The fatty acid ester dispersing agent preferably has a mass loss rate of 30% or less when held in an air atmosphere at a temperature of 200° C. for 180 minutes.

公开(公告)号：US20210087702A1

公开(公告)日：2021-03-25

申请号：US16968351

申请日：2019-01-28

Applicant: DAICEL CORPORATION

Inventor： Norihiro KIMOTO ,  Tomohiro GOTO ,  Kouichi UMEMOTO

IPC: C25D5/00 ,  C25D3/48 ,  C25D3/46 ,  C25D3/50 ,  C25D7/00

Abstract: Provided is a plating film that can exhibit a high gloss and a low contact resistance value. The plating film according to an embodiment of the present invention is a plating film including a noble metal matrix and nanodiamond particles dispersed in the noble metal matrix. The plating film according to an embodiment of the present invention preferably has a gloss at an incident angle of 60° of not less than 250 GU and/or a contact resistance value at a load of 50 gf of not greater than 1 mΩ, and a difference between a contact resistance value at a load of 50 gf and a contact resistance value at a load of 5 gf of not greater than 5 mΩ. The nanodiamond particles are preferably nanodiamond particles including a surface-modifying group containing a sterically repulsive group and particularly preferably nanodiamond particles including a surface-modifying group containing a polyglycerol chain.

公开(公告)号：US20170313590A1

公开(公告)日：2017-11-02

申请号：US15522063

申请日：2015-08-31

Applicant: DAICEL CORPORATION

Inventor： Norihiro KIMOTO ,  Ryouta KOJIMA

IPC: C01B32/28 ,  H01B1/04 ,  B82Y30/00 ,  B82Y40/00

CPC classification number: C01B32/28 ,  B01J3/08 ,  B01J13/00 ,  B02C17/00 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/25 ,  H01B1/04 ,  Y10S977/773

Abstract: A suspension of nanodiamond aggregates according to the present invention is a suspension of detonation nanodiamond aggregates. The suspension has such a pH and an electric conductivity as to meet one of conditions (1) and (2) as follows. (1) The suspension has a pH of 4 to 7 and an electric conductivity of 50 μS/cm or less per weight percent of the solids concentration of the suspension; and (2) the suspension has a pH of 8 to 10.5 and has an electric conductivity of 300 μS/cm or less per weight percent of the solids concentration of the suspension.