Dic Corporation

Jianjun Yuan

Hironobu Oki

Tomoki Dohi

Wei Zhao

Cheng Liu

Yusuke Kano

Shaowei Yang

Meng Li

Hiroshi Kinoshita

Minoru Tabuchi

Masato Otsu

Masamichi Hayashi

Shingo Takada

Hironobu Matsueda

Seiji Mizuta

Akihiro Koike

Jian Guo

Taro Morimitsu

The present invention provides an alumina particle containing molybdenum (Mo) and an inorganic coating part provided on the surface of the alumina particle.

Composite particle and method of producing composite particle

A molybdenum trioxide powder contains an aggregate of primary particles having a β crystal structure of molybdenum trioxide. The molybdenum trioxide powder has a MoOcontent ratio of 99.6% or more measured by X-ray fluorescence (XRF), and has an average particle diameter of the primary particles of 1 μm or less. A method for producing the above molybdenum trioxide powder includes vaporizing a molybdenum oxide precursor compound to form molybdenum trioxide vapor, and cooling the molybdenum trioxide vapor.

Molybdenum trioxide powder and method for producing same

The composite particle of the present invention includes an alumina particle having a card-house structure which is formed of three or more pieces of plate-like alumina and in which the pieces of plate-like alumina are fixed to each other; and an inorganic coating part provided on a surface of the plate-like alumina.

A plate-like alumina particle, in which a ratio I(006)/I(ll3) of a peak intensity I(006) at 20=41.6±0.3 degrees which corresponds to a (006) face to a peak intensity I(113) at 20=43.3±0.3 degrees which corresponds to a (113) face of diffraction peaks obtained by X-ray diffraction measurement using a Cu-Ka ray, is 0.2 or more. A method for manufacturing the plate-like alumina particle including mixing an aluminum compound including an aluminum element, a molybdenum compound including a molybdenum element, and a shape-controlling agent to produce a mixture and firing the mixture.

Plate-like alumina particle and method for manufacturing plate-like alumina particle

It relates to zirconia particles containing molybdenum and each having a polyhedron shape. The molybdenum is preferably unevenly distributed in surface layers of the zirconia particles. It also relates to a method for producing the zirconia particles. The method includes mixing a zirconium compound and a molybdenum compound to form a mixture and firing the mixture.

Zirconia particles and method for producing zirconia particles

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.

Lubricant and lubrication composition

Spinel has conventionally been used as mentioned above in applications, such as gems, catalyst carriers, adsorbents, photocatalysts, optical materials, and heat-resistant insulating materials, and is not expected to be used in an application of an inorganic filler having thermal conductive properties. Accordingly, an object of the present invention is to provide spinel particles having excellent thermal conductive properties. A spinel particle having spinel containing a magnesium atom, an aluminum atom, and an oxygen atom, and molybdenum being existed on the surface of and/or in the inside of the spinel, wherein the crystallite diameter of the spinel at the [311] plane is 100 nm or more.

Spinel particles, method for producing same, and composition and molding including spinel particles

The present invention aims to provide a simple and efficient method for manufacturing &#x3b1;-alumina particles, main component particles of which each have a crystal face other than the face [001] as a main crystal face and a polyhedral shape other than a hexagonal bipyramidal shape. According to the method for manufacturing &#x3b1;-alumina particles of the present invention, when an aluminum compound is calcined in the presence of a specific content of a metal compound, &#x3b1;-alumina particles each having a particle diameter of 50 &#x3bc;m or less, a degree of &#x3b1; crystallization of 90% or more, and a polyhedral shape can be obtained.

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Chiba, Japan

Jianjun Yuan