Cosmetics

The cosmetic composition uses a combination of microcapsules with silylated peptide/silane copolymers, silicone surfactants, and hydrophilic scattering agents to address aggregation and precipitation issues, ensuring high UV protection and redispersibility in cosmetic formulations.

JP7883291B2Active Publication Date: 2026-07-01SEIWA KASEI CO JP
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Patent Information

Application Number
JP2022144972
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-10-22
Filing Date
2022-09-13
Publication Date
2026-07-01
Estimated Expiration
2042-09-13

AI Technical Summary

Technical Problem

Existing cosmetic formulations containing microcapsules encapsulating ultraviolet absorbers face issues with microcapsule aggregation and precipitation during storage, affecting dispersibility and UV protection performance.

Method used

A cosmetic composition is formulated by combining microcapsules with a silylated peptide/silane compound copolymer or silylated amino acid/silane compound copolymer wall film, a specific silicone surfactant, and a hydrophilic ultraviolet scattering agent like titanium dioxide, to enhance dispersibility and prevent aggregation.

Benefits of technology

The composition ensures uniform dispersion of microcapsules, maintains high UV protection (high SPF and PA), and exhibits excellent redispersibility even after potential precipitation, providing favorable skin application characteristics.

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Patent Text Reader

Abstract

To provide cosmetics that contain ultraviolet absorber-including fine capsules, have high ultraviolet protection performance (high SPF and PA), and are less prone to aggregation and precipitation during storage.SOLUTION: Cosmetics contain (A) ultraviolet absorber-including fine capsules with wall films composed of silylated peptide / silane compound copolymers or silylated amino acid / silane compound copolymers, (B) a silicone surfactant, and (C) a hydrophilic ultraviolet scattering agent.SELECTED DRAWING: None
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Citation Information

Patent Citations

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    JP1999221459A

  • Silica-covered particulate titanium oxide or silica-covered particulate zinc oxide, manufacturing method thereof, water dispersion thereof, and cosmetics blended therewith

    JP2007016111A

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    JP2015054841A

  • Cosmetic base material, and cosmetic containing the cosmetic base material

    JP2017218392A

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    JP2020007279A