Method for manufacturing a solid powdered cosmetic

By using aqueous solvents with specific SP values ​​and efficient stirring technology in the manufacture of solid powder cosmetics, the problems of uniform dispersion and luster of powders and oils have been solved, resulting in the preparation of high-quality solid powder cosmetics.

CN116744886BActive Publication Date: 2026-06-26KAO CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
KAO CORP
Filing Date
2022-01-14
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing technologies in the manufacture of solid powder cosmetics suffer from problems such as poor uniform dispersion of powder and oil, limited oil dosage, reduced luster, and impaired user experience. In particular, the dissolution of oil in the wet process leads to insufficient residue and agglomeration.

Method used

A water-based solvent with an SP value of 21 (cal/cm3) 1/2 or higher is used to mix with oil, powder and surfactant. The mixture is prepared by a stirring device with a high speed of 6 m/s or higher and 39 m/s or lower at the tip of the stirring blade. The solvent is then removed in a cosmetic container to ensure uniform dispersion and luster of the oil and pigment.

Benefits of technology

It achieves high-level formulation and sufficient residue of oils, good dispersibility of pigments, avoids agglomeration, improves luster and usability, and produces excellent solid powder cosmetics.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application provides a method for producing a solid powder cosmetic in which an oil agent can be formulated at a high level, which has both dispersibility of a pigment and glitter, and further has excellent use feeling. The present application relates to a method for producing a solid powder cosmetic, wherein the following processes (A) to (C) are included: (A) a process of mixing an oil agent, a powder, a surfactant at 0 to 10 mass% relative to the oil agent, and an aqueous solvent at 90 to 10 mass% relative to the total amount of the oil agent, the powder, and the surfactant, at a circumferential speed of a stirring blade tip of 6 to 39 m / s to produce a slurry; (B) a process of filling the slurry obtained by the process (A) into a cosmetic container; and (C) a process of removing the solvent from the slurry after the process (B). 3 ) 1 / 2 The above aqueous solvent and the surfactant at 0 to 10 mass% relative to the oil agent are mixed to produce a slurry at a circumferential speed of a stirring blade tip of 6 to 39 m / s; (B) a process of filling the slurry obtained by the process (A) into a cosmetic container; and (C) a process of removing the solvent from the slurry after the process (B).
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