US 12,391,554 B2
Surface-modified nanodiamond, nanodiamond dispersion composition, and method for manufacturing surface-modified nanocarbon particles
Takeru Kashiwagi, Tokyo (JP); and Hiroshi Koyama, Tokyo (JP)
Assigned to DAICEL CORPORATION, Osaka (JP)
Appl. No. 17/625,546
Filed by DAICEL CORPORATION, Osaka (JP)
PCT Filed Jun. 30, 2020, PCT No. PCT/JP2020/025693
§ 371(c)(1), (2) Date Jan. 7, 2022,
PCT Pub. No. WO2021/006120, PCT Pub. Date Jan. 14, 2021.
Claims priority of application No. 2019-127636 (JP), filed on Jul. 9, 2019.
Prior Publication US 2022/0289577 A1, Sep. 15, 2022
Int. Cl. C01B 32/28 (2017.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01)
CPC C01B 32/28 (2017.08) [B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C01P 2002/82 (2013.01); C01P 2004/64 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A surface-modified nanodiamond comprising a nanodiamond particle and a group that surface-modifies the nanodiamond particle, the group being represented by Formula (1) or (2):

OG Complex Work Unit Chemistry
wherein in Formula (1), R1 represents a linear C1-22 alkylene group, a substituted or unsubstituted alkenylene group, a substituted or unsubstituted alkynylene group, a substituted or unsubstituted alicyclic hydrocarbon group, a substituted or unsubstituted aromatic hydrocarbon group, or a group in which two or more of those listed above are bonded; and R2 represents [—X1—R3], wherein X1 represents —NH—, —NR3—, —O—, —S—, or —O—(C═O)—, each R3 is the same or different and represents a substituted or unsubstituted hydrocarbon group having 15 or more carbon atoms, and an atom bonded to X1 is a carbon atom;

OG Complex Work Unit Chemistry
wherein in Formula (2), R4 and R5 are the same or different and each represent a hydrogen atom or a monovalent organic group; X2 represents a single bond or —O—; and R6 represents an aliphatic hydrocarbon group.