US 2026/0102749 A1 · DISPERSION COMPOSITION PRODUCTION METHOD

Abstract

A dispersion composition production method uses a dispersion device including: a dispersion mechanism dispersing a raw material composition; a supply mechanism equipped with a plunger part and supplying the raw material composition to the dispersion mechanism; and a cooling mechanism cooling the plunger part using a cooling liquid medium. The raw material composition contains a non-aqueous dispersion medium and a dispersoid. The cooling liquid medium is a liquid medium that results in 0-50 particles 10 μm or more in the flocculation test below: dispersing a composition identical to the raw material composition; preparing a test dispersion liquid having a particle size of less than 10 μm; preparing a test sample by mixing the test dispersion liquid and the cooling liquid medium at a mass ratio of 1:1; and identifying the number of particles of 10 μm or more in the test sample.

Claims5

Dependent claims

A dispersion composition production method, using a dispersion device equipped with a dispersion mechanism that disperses a raw material composition, a supply mechanism that comprises a plunger part and supplies the raw material composition to the dispersion mechanism, and a cooling mechanism that cools the plunger part using a cooling liquid medium, wherein

the raw material composition comprises a non-aqueous dispersed medium and a dispersoid;
and
the cooling liquid medium is a liquid medium that results in the number of particles of 10 μm or more in a flocculation test mentioned below being 0 to 50,
in the flocculation test, a composition identical to the raw material composition is subjected to a dispersion treatment using a bead mill or a high-pressure homogenizer, a test dispersion liquid is prepared having a particle size of less than 10 μm as measured with a grindometer (0 to 100 μm),
the test dispersion liquid and the cooling liquid medium are mixed at a mass ratio of 1:1 at 25° C. to prepare a test sample, and the number of particles of 10 μm or more in the test sample is identified using a grindometer (0 to 100 μm).

2 more elements

Dependencies are inferred from the claim text.

Dispersion composition production method

Life of this patent

Dispersion composition production method

Life of this patent

Abstract

Claims5