Colorant-containing core-shell particles
Core-shell particles with a colorant core and visible light-absorbing shell address the issues of dispersion stability and weather resistance in aqueous paints, maintaining paint film integrity and appearance.
JP7763052B2Active Publication Date: 2025-10-31NIPPON SHOKUBAI CO LTD
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Patent Information
- Application Number
- JP2021130443
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-02-01
- Filing Date
- 2021-08-10
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2041-08-10
AI Technical Summary
Technical Problem
Aqueous paints face challenges in achieving dispersion stability and weather resistance, particularly for outdoor applications where colorants used are poorly soluble in water, leading to difficulties in maintaining the integrity and appearance of paint films over time.
Method used
The development of core-shell particles comprising a core containing a colorant and polymer A, surrounded by a shell with a visible light-absorbing material and polymer B, enhances dispersion stability and weather resistance in aqueous media.
Benefits of technology
The core-shell particles provide excellent dispersion stability and weather resistance in aqueous media, ensuring long-lasting paint film quality and appearance.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide a coloring agent-containing core-shell particle that has excellent stability of dispersion into aqueous medium and can be used in a paint having weather resistance during formation of coating film.SOLUTION: Provided is a core-shell particle that has a core containing a coloring agent and polymer A, and a shell containing a visible light absorbing material and polymer B.SELECTED DRAWING: None
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