Patent ID: 11939222
Assignee: DAICEL CORPORATION
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 11:
12. A nanodiamond particle dispersion comprising first nanodiamond particles and second nanodiamond particles dispersed in an organic solvent, wherein the organic solvent has an SP value not less than 8.0 (cal/cm3)1/2 and less than 10.0 (cal/cm3)1/2, the first nanodiamond particles and the second nanodiamond particles are dispersed with a particle diameter (D50) from 2 to 100 nm, the first nanodiamond particles have a structure including the surface modified by a group represented by Formula (1′):, where, in Formula (1′), R4 denotes an alkyl group having from 1 to 3 carbon atoms, R1′ denotes a group represented by Formula (a), R2′ denotes a hydrogen atom, an aliphatic hydrocarbon group having from 1 to 3 carbon atoms, or a group represented by Formula (a), and the atomic bond indicated by the wavy line in the Formula bonds to the surface of the nanodiamond particles:, where, in Formula (a), R4 is the same as described above, R3 and R5 may be the same or different and each denotes a hydrogen atom or an aliphatic hydrocarbon group having from 1 to 3 carbon atoms, m represents an integer of 0 or greater, n represents an integer greater than 0, an atomic bond extending to the left from a silicon atom bonds to an oxygen atom, and an atomic bond indicated by a wavy line bonds to the surface of the nanodiamond particles.
and the second nanodiamond particles have a structure including the surface modified by a group represented by Formula (2′):, where, in Formula (2′), R6 denotes an alkyl group having from 14 to 20 carbon atoms; R1′ and R2′ are the same as those described above; and the atomic bond indicated by the wavy line in the Formula bonds to the surface of the second nanodiamond particles.