A method for producing lipid particles, including: injecting molten lipids directly into a liquid at a temperature lower than a melting point of the lipids through a liquid supply port of a two-fluid nozzle while injecting a gas directly into the liquid through a gas supply port of the two-fluid nozzle, so that the molten lipids are dispersed and atomized into particles in the liquid due to the gas and the particles are solidified to form lipid particles. The lipids have a water solubility of 10 g/L or less at 25° C. and are solid at 25° C. The two-fluid nozzle is heated to a temperature at least 10° C. higher than the melting point of the lipids. A ratio D50/Nd of a volume median diameter D50 of the lipid particles to an orifice diameter Nd of the liquid supply port of the two-fluid nozzle is 0.0017 or more and 0.17 or less.

The invention provides a process for preparing dispersion powders by spray drying of aqueous polymer dispersions of polymers of one or more ethylenically unsaturated monomers selected from the group encompassing vinyl esters, methacrylic esters, acrylic esters, olefins, dienes, vinylaromatics, and vinyl halides with a drying gas in a nozzle atomization dryer, characterized in that the aqueous polymer dispersion (feed), before being atomized, is preheated under pressure to a temperature of 100° C. to 200° C. and is atomized at this temperature, the pressure being set such that the aqueous phase of the polymer dispersion does not boil at the temperature selected.

The invention provides a process for preparing dispersion powders by spray drying of aqueous polymer dispersions of polymers of one or more ethylenically unsaturated monomers selected from the group encompassing vinyl esters, methacrylic esters, acrylic esters, olefins, dienes, vinylaromatics, and vinyl halides with a drying gas in a nozzle atomization dryer, characterized in that the aqueous polymer dispersion (feed), before being atomized, is preheated under pressure to a temperature of 100° C. to 200° C. and is atomized at this temperature, the pressure being set such that the aqueous phase of the polymer dispersion does not boil at the temperature selected.

A droplet generating apparatus, system, and method are disclosed. Based on a relative vibration between a micro-pipe and a container containing a second liquid, a first liquid flowing out from an outlet end of the micro-pipe can be detached from the micro-pipe by a fluid shear force of the second liquid to form droplets in the second liquid. Multitudinous quantitative and uniform droplets can be generated precisely and accurately in the present disclosure.

An X-ray diffractometrically single-phase lithium titanium phosphate can be obtained by an industrially advantageous method. Provided is a method for producing the lithium titanium phosphate having a NASICON structure represented by the following general formula (1): Li.sub.1+xM.sub.x(Ti.sub.1−yA.sub.y).sub.2−x(PO.sub.4).sub.3 (1), and provided is a method comprising a first step of preparing a raw material mixed slurry (1) comprising, at least, titanium dioxide, phosphoric acid and a surfactant, a second step of heat treating the raw material mixed slurry (1) to obtain a raw material heat-treated slurry (2), a third step of mixing the raw material heat-treated slurry (2) with a lithium source to obtain a lithium-containing raw material heat-treated slurry (3), a fourth step of subjecting the lithium-containing raw material heat-treated slurry (3) to a spray drying treatment to obtain a reaction precursor containing, at least, Ti, P and Li, and a fifth step of firing the reaction precursor.

A nozzle for spraying materials, in particular dispersions, emulsions or suspensions, comprising a nozzle body having a nozzle mouthpiece.

A nozzle for spraying materials, in particular dispersions, emulsions or suspensions, comprising a nozzle body having a nozzle mouthpiece.

A nanoparticle includes a poorly-water-soluble physiologically active compound and an additive substance. A relative span factor (R.S.F) of the nanoparticle satisfies formula: 0<(R.S.F)≤1.0, a volume average particle diameter of the nanoparticle is 200 nm or less, and the poorly-water-soluble physiologically active compound is covered with the additive substance.

A nanoparticle includes a poorly-water-soluble physiologically active compound and an additive substance. A relative span factor (R.S.F) of the nanoparticle satisfies formula: 0<(R.S.F)≤1.0, a volume average particle diameter of the nanoparticle is 200 nm or less, and the poorly-water-soluble physiologically active compound is covered with the additive substance.

Methods for producing highly spherical particles that comprise: mixing a mixture comprising: (a) nanoclay-filled-polymer composite comprising a nanoclay dispersed in a thermoplastic polymer, (b) a carrier fluid that is immiscible with the thermoplastic polymer of the nanoclay-filled-polymer composite, optionally (c) a thermoplastic polymer not filled with a nanoclay, and optionally (d) an emulsion stabilizer at a temperature at or greater than a melting point or softening temperature of the thermoplastic polymer of the nanoclay-filled-polymer and the thermoplastic polymer, when included, to disperse the nanoclay-filled-polymer composite in the carrier fluid; cooling the mixture to below the melting point or softening temperature to form nanoclay-filled-polymer particles; and separating the nanoclay-filled-polymer particles from the carrier fluid.