Dic Corporation

Yusuke Kano

Jianjun Yuan

Hironobu Oki

Tomoki Dohi

Akihiro Koike

Masato Otsu

Minoru Tabuchi

Hironobu Matsueda

Seiji Mizuta

Molybdenum disulfide particles include a 2H crystal structure and a 3R crystal structure of molybdenum disulfide, in which 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/(β cos θ) using a profile obtained from powder X-ray diffraction (XRD) using Cu-Kα rays as an X-ray source is 1 nm or more and 150 nm or less (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]).

Molybdenum disulfide particles and lubricating composition

Provided is a particle-containing grease composition that can efficiently improve friction and wear resistance properties with a small added amount and exhibits excellent friction and wear resistance properties even when a clearance and the surface roughness of the friction surface in sliding parts are extremely small. The particle-containing grease composition includes base oil, a thickener, and molybdenum disulfide particles, in which a median diameter Dof the molybdenum disulfide particles determined by a dynamic light scattering method is 10 nm or more and less than 450 nm.

Particle-containing grease composition

A molybdenum sulfide powder according to the invention contains molybdenum disulfide having a 3R crystal structure. A heavy-metal adsorbent according to the invention contains molybdenum sulfide particles, and the molybdenum sulfide particles have a median diameter Dof 10 nm to 1,000 nm obtained by a dynamic light scattering type particle diameter distribution measuring device. A photothermal conversion material according to the invention contains a material containing molybdenum sulfide particles and generates heat by absorbing light energy.

Molybdenum sulfide powder and method for producing same, heavy-metal adsorbent, photothermal conversion material, distillation method, oxygen reduction catalyst, and catalyst ink

The present invention relates to a lubricant containing molybdenum sulfide particles, and the molybdenum sulfide particles contain molybdenum disulfide having a 3R crystal structure. The present invention relates to a lubricating composition containing molybdenum sulfide particles, which are the lubricant, and a base oil which is a mineral oil, a synthetic oil, or a partially synthetic oil.

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Sakura, Japan

Yusuke Kano