公开(公告)号：US20240116762A1

公开(公告)日：2024-04-11

申请号：US18503620

申请日：2023-11-07

Applicant: DAICEL CORPORATION

Inventor： Takeru KASHIWAGI ,  Hiroshi KOYAMA ,  Atsushi KUME

IPC: C01B32/28 ,  C09C1/44 ,  C09C3/08

CPC classification number: C01B32/28 ,  C09C1/44 ,  C09C3/08 ,  C01P2002/82 ,  C01P2004/62 ,  C01P2004/64

Abstract: Provided is a surface-modified nanodiamond having excellent dispersibility in an organic solvent, and a method capable of introducing various surface-modifying groups and easily producing surface-modified nanocarbon particles with little zirconia contamination. The surface-modified nanodiamond includes nanodiamond particles and a group that surface-modifies the nanodiamond particles and is represented by Formula (1): —X—R1 (1) [where X represents —NH—, —O—, —O—C(═O)—, —C(═O)—O—, —NH—C(═O)—, —C(═O)—NH—, or —S—; the bond extending left from X is bonded to a nanodiamond particle; R1 represents a monovalent organic group that does not have a hydroxy group, carboxy group, amino group, mono-substituted amino group, terminal alkenyl group, and terminal epoxy group; an atom bound to X is a carbon atom; and a molar ratio of carbon atoms to the total amount of heteroatoms selected from the group consisting of nitrogen atoms, oxygen atoms, sulfur atoms, and silicon atoms is 4.5 or greater.

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：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：US20220177314A1

公开(公告)日：2022-06-09

申请号：US17618186

申请日：2020-06-03

Applicant: DAICEL CORPORATION

Inventor： Takeru KASHIWAGI ,  Hiroshi KOYAMA ,  Atsushi KUME

IPC: C01B32/28 ,  C09C1/44 ,  C09C3/08

Abstract: Provided is a surface-modified nanodiamond having excellent dispersibility in an organic solvent, and a method capable of introducing various surface-modifying groups and easily producing surface-modified nanocarbon particles with little zirconia contamination. The surface-modified nanodiamond includes nanodiamond particles and a group that surface-modifies the nanodiamond particles and is represented by Formula (1): —X—R1 (1) [where X represents —NH—, —O—, —O—C(═O)—, —C(═O)—O—, —NH—C(═O)—, —C(═O)—NH—, or —S—; the bond extending left from X is bonded to a nanodiamond particle; R1 represents a monovalent organic group that does not have a hydroxy group, carboxy group, amino group, mono-substituted amino group, terminal alkenyl group, and terminal epoxy group; an atom bound to X is a carbon atom; and a molar ratio of carbon atoms to the total amount of heteroatoms selected from the group consisting of nitrogen atoms, oxygen atoms, sulfur atoms, and silicon atoms is 4.5 or greater.

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：US20220289577A1

公开(公告)日：2022-09-15

申请号：US17625546

申请日：2020-06-30

Applicant: DAICEL CORPORATION

Inventor： Takeru KASHIWAGI ,  Hiroshi KOYAMA

IPC: C01B32/28

Abstract: Provided is a surface-modified nanodiamond having excellent dispersibility in an organic solvent, or a surface-modified nanodiamond which is an intermediate for obtaining the surface-modified nanodiamond. Also, provided is a method of producing surface-modified nanocarbon particles, in which various surface-modifying groups can be introduced into the nanocarbon particles. The surface-modified nanodiamond according to the present disclosure includes a nanodiamond particle and a group that surface-modifies the nanodiamond particle, the group being represented by Formula (1) or (2).