The present invention has an object providing microparticles having an average particle size of 100 μm or less.

The present invention provides microparticles having an average particle size of 100 μm or less and a method for producing thereof. In addition, the present invention provides medicine, food and feedstuff comprising the microparticles having an average particle size of 100 μm or less.

A particle production apparatus includes a liquid droplet formation unit configured to discharge a liquid from a discharging hole to form a liquid droplet, and a particle formation unit configured to solidify the liquid droplet to form a particle. The particle formation unit includes a conveyance gas flow, and the liquid droplet formation unit is configured to discharge the liquid to satisfy Formula 1 below:

[00001]$\begin{array}{cc}P=\frac{\mathrm{Vj}}{\mathrm{Pd}0}\sqrt{\frac{\rho \mathrm{Vx}}{2A}}{\cos }^2\left(\theta -65\right)>1& \mathrm{Formula}1\end{array}$

In the Formula 1, Vj represents a velocity (m/s) of the liquid droplet to be discharged, F represents a discharging drive frequency (kHz), d0 represents a diameter (μm) of the liquid droplet, ρ represents a density (kg/m) of the liquid, Vx represents a velocity (m/s) of the conveyance gas flow, A represents shortest distance (m) from the liquid droplet formation unit to a center of the conveyance gas flow, and θ represents an angle (deg.) at which the liquid droplet is to be discharged.

A particle production apparatus includes a liquid droplet formation unit configured to discharge a liquid from a discharging hole to form a liquid droplet, and a particle formation unit configured to solidify the liquid droplet to form a particle. The particle formation unit includes a conveyance gas flow, and the liquid droplet formation unit is configured to discharge the liquid to satisfy Formula 1 below:

[00001]$\begin{array}{cc}P=\frac{\mathrm{Vj}}{\mathrm{Pd}0}\sqrt{\frac{\rho \mathrm{Vx}}{2A}}{\cos }^2\left(\theta -65\right)>1& \mathrm{Formula}1\end{array}$

In the Formula 1, Vj represents a velocity (m/s) of the liquid droplet to be discharged, F represents a discharging drive frequency (kHz), d0 represents a diameter (μm) of the liquid droplet, ρ represents a density (kg/m) of the liquid, Vx represents a velocity (m/s) of the conveyance gas flow, A represents shortest distance (m) from the liquid droplet formation unit to a center of the conveyance gas flow, and θ represents an angle (deg.) at which the liquid droplet is to be discharged.

The present invention relates to mesostructured particles that have the particular property of being spontaneously individualized, and that include anticorrosion agents. The invention also relates to a process for preparing these particles, and also to materials obtained by inclusion of these particles in matrices.

The present invention relates to mesostructured particles that have the particular property of being spontaneously individualized, and that include anticorrosion agents. The invention also relates to a process for preparing these particles, and also to materials obtained by inclusion of these particles in matrices.

Provided is a toner including at least: a binder resin; and a release agent, wherein in a transmission electron microscopic (TEM) image of a torn cross-section of the toner, the release agent has an acicular or filiform shape and an average aspect ratio of 31 or greater, and wherein a displacement amount of the toner when 250 micronewtons is applied to the toner in a microcompression test is 700 nm or less.

A device for granulating powders by cryogenic atomisation, characterised in that it comprises: a device for mixing powders by cryogenic fluid, comprising at least one chamber for mixing powders, comprising a cryogenic fluid; and a device for atomising a suspension of powders mixed by the device for mixing powders in order to allow a granulation of the powders, comprising a way of fractionating the suspension of powders making it possible to adjust the size of the droplets of powders to be atomised, and a method for adjusting the moisture of the mixed powders and/or the moisture of the atomisation atmosphere.

A device for granulating powders by cryogenic atomisation, characterised in that it comprises: a device for mixing powders by cryogenic fluid, comprising at least one chamber for mixing powders, comprising a cryogenic fluid; and a device for atomising a suspension of powders mixed by the device for mixing powders in order to allow a granulation of the powders, comprising a way of fractionating the suspension of powders making it possible to adjust the size of the droplets of powders to be atomised, and a method for adjusting the moisture of the mixed powders and/or the moisture of the atomisation atmosphere.

This coating device 1 comprises a dispersing/mixing part 2, a conveying part 3, and a collecting part 4. A raw material powder and a coating solution are supplied to the dispersing/mixing part 4 as a slurry. In the dispersing/mixing part 2, the slurry (mixture) in which the raw powder and the coating solution have been mixed is dispersed by means of an air flow of a high-pressure fluid into a powder, a film of the coating solution having adhered to the surface of the powder. The powder is introduced from the dispersing/mixing part 2 to the conveying part 3t and is conveyed with the conveying part 3 oriented toward the collecting part 4. While the powder is being conveyed, the coating solution that has adhered to the particle surfaces dries, whereby a powder in which the particle surfaces ares coated with a precursor is produced. A powder flow introduced into the collecting part 4 passes through a bag filter 54. This causes the powder to be captured by the bag filter 54.

A high dielectric composition for particle formation that includes a high dielectric solvent, and a high dielectric polymer dissolved into the high dielectric solvent. A method of forming particles including dissolving a high dielectric polymer in a high dielectric solvent to form a high dielectric composition, and dielectrophoretically spinning the high dielectric composition in an electrostatic field to form particles.