US 12,435,290 B2
Molybdenum disulfide particles and lubricating composition
Akihiro Koike, Sakura (JP); and Yusuke Kano, Sakura (JP)
Assigned to DIC Corporation, Tokyo (JP)
Appl. No. 18/281,612
Filed by DIC Corporation, Tokyo (JP)
PCT Filed Oct. 21, 2021, PCT No. PCT/JP2021/038979
§ 371(c)(1), (2) Date Sep. 12, 2023,
PCT Pub. No. WO2022/201610, PCT Pub. Date Sep. 29, 2022.
Claims priority of application No. 2021-050478 (JP), filed on Mar. 24, 2021.
Prior Publication US 2024/0158714 A1, May 16, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C10M 125/22 (2006.01); C01G 39/06 (2006.01); C10M 139/00 (2006.01); C10M 141/12 (2006.01); C10M 169/04 (2006.01); C10N 20/06 (2006.01)
CPC C10M 125/22 (2013.01) [C01G 39/06 (2013.01); C10M 139/00 (2013.01); C10M 141/12 (2013.01); C10M 169/04 (2013.01); C01P 2002/60 (2013.01); C01P 2002/72 (2013.01); C01P 2002/74 (2013.01); C01P 2002/76 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2004/64 (2013.01); C01P 2006/12 (2013.01); C10M 2201/066 (2013.01); C10M 2203/003 (2013.01); C10N 2020/06 (2013.01)] 14 Claims
OG exemplary drawing
 
1. Molybdenum disulfide particles comprising:
a 2H crystal structure and a 3R crystal structure of molybdenum disulfide, wherein
a presence ratio of the 3R crystal structure in a crystal phase of molybdenum disulfide is 10% or more, and
a crystallite size of the 3R crystal structure calculated by extended-type Rietveld analysis based on an analysis formula L=Kλ/(βcosθ) using a profile obtained from powder X-ray diffraction (XRD) using Cu-Kα rays as an X-ray source is 1 nm to 150 nm,
(in the above formula, K is an instrumental constant that depends on an XRD optical system (an incident side and a detector side) and settings, L is a crystallite size [m], λ is a measured X-ray wavelength [m], β is a half width [rad], and θ is a Bragg angle of a diffraction line [rad]).