Water-repellent coating, water-repellent component, paint composition, and method for manufacturing a water-repellent component

A three-dimensional aggregated coating of alumina and boehmite particles with a radial structure and Cassie-Baxter surface maintains water repellency under adverse conditions, addressing the loss of superhydrophobicity in existing materials.

JP7873429B2Active Publication Date: 2026-06-12NIPPON LIGHT METAL CO LTD +1
View PDF 4 Cites 0 Cited by

Patent Information

Application Number
JP2022007721
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-01-22
Filing Date
2022-01-21
Publication Date
2026-06-12
Estimated Expiration
2042-01-21

Smart Images

  • Figure 0007873429000005
    Figure 0007873429000005
  • Figure 0007873429000006
    Figure 0007873429000006
  • Figure 0007873429000007
    Figure 0007873429000007
Patent Text Reader

Abstract

To provide a water-repellent film which has high water repellency even under an acid condition or a contamination condition, a water-repellent member, a coating composition and a method for producing a water-repellent member.SOLUTION: A water-repellent film includes a plurality of long particles containing at least any one of alumina and boehmite as a main component, and an aggregate containing a covering layer that covers the surface of the plurality of long particles and is formed of a water-repellent resin. The aggregate is formed by three-dimensionally aggregating the plurality of long particles. The outer surface of the aggregate is covered with the covering layer. The aggregate holds a space communicating with the outside of the water-repellent film between the plurality of long particles covered with the covering layer.SELECTED DRAWING: Figure 3
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Chestnut-like boehmite and method for manufacturing the same

    JP2012121773A

  • Member, fluid separation device, and composition

    JP2019210401A

  • Coating composition, process for producing same, coating film, ventilating fan, and air conditioner

    WO2016181676A1

  • Functional coatings comprising microbeads and nanofibers

    WO2021011409A1