Microcapsules

By employing an inorganic shell and an organic compound core in the microcapsule, the problem of thin and brittle silica microcapsule shells was solved, enabling long-term retention of functional oils and particle size control, and improving the stability and physical strength of the microcapsules.

CN121797207APending Publication Date: 2026-04-07KAO CORP
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Patent Information

Application Number
CN202511973907.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2020-12-28
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Existing silica microcapsules have thin and brittle shells, which makes the encapsulated components easy to diffuse, making it impossible to maintain the functional oils for a long time, and the particle size control is poor.

Method used

The microcapsule structure consists of an inorganic shell and an organic compound core. The shell contains inorganic components, while the core contains functional oils and organic compounds with specific hydrocarbon and polar groups. The microcapsules are formed through a sol-gel reaction.

Benefits of technology

This improved the long-term retention and particle size control of the microcapsules, suppressed the leakage of functional oils, and ensured the stability and physical strength of the microcapsules.

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Abstract

The present invention pertains to a microcapsule having a shell and a core, the shell containing an inorganic substance as a constituent component, the core containing one or more organic compounds inside the shell, the organic compounds containing the following component (A), component (B1), and component (B2), the content ratio of the component (B1) to the component (A) being 0.01-7 mass%, and the content ratio of the component (B2) to the component (A) being 0.01-7 mass%. The content ratio of the component (B2) relative to the component (A) is from 1% by mass to 10% by mass (inclusive); component (B1): one or more substances selected from the group consisting of a higher aliphatic alcohol having 6 or more carbon atoms, a higher fatty acid having 6 or more carbon atoms, a monoalkyl glyceryl ether having an alkyl group having 6 or more carbon atoms, and an amide compound having an alkyl group having 8 or more carbon atoms, and component (B2): a fatty acid ester having 6 or more carbon atoms in total, excluding component (A). The component (A) is excluded.
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