	US 12,103,855 B2
	Surface-modified nanodiamond, liquid dispersion containing surface-modified nanodiamond, and composite material
Daisuke Shiro, Tokyo (JP); and Atsushi Kume, Tokyo (JP)
Assigned to DAICEL CORPORATION, Osaka (JP)
Appl. No. 17/264,591
Filed by DAICEL CORPORATION, Osaka (JP)
PCT Filed Jul. 16, 2019, PCT No. PCT/JP2019/027946 § 371(c)(1), (2) Date Jan. 29, 2021, PCT Pub. No. WO2020/026790, PCT Pub. Date Feb. 6, 2020.
Claims priority of application No. 2018-142360 (JP), filed on Jul. 30, 2018.
Prior Publication US 2021/0331928 A1, Oct. 28, 2021
Int. Cl. C01B 32/28 (2017.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01); C08K 3/04 (2006.01)

CPC C01B 32/28 (2017.08) [B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C01P 2004/30 (2013.01); C01P 2004/62 (2013.01); C01P 2004/64 (2013.01); C08K 3/04 (2013.01)]

19 Claims

1. A surface-modified nanodiamond having a structure in which a surface of a nanodiamond particle is modified by a group represented by Formula (1) below:

where R¹to R⁴are the same or different and each represent an aliphatic hydrocarbon group having from 1 to 25 carbons, at least one of R¹to R⁴is an aliphatic hydrocarbon group having from 10 to 25 carbons, and an atomic bond of the carbon atom in the formula bonds to the surface of the nanodiamond particle,

wherein a particle size, D50, is from 20 to 200 nm.