Fouling control device

The fouling control light-emitting device with a hydrophilic-modified polysiloxane coating effectively inhibits biofouling on submerged surfaces, addressing environmental concerns and maintaining light transmission, enhancing fouling control efficacy.

WO2026119792A1 Publication Date: 2026-06-11AKZO NOBEL COATINGS INT BV

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
AKZO NOBEL COATINGS INT BV
Filing Date
2025-12-01
Publication Date
2026-06-11

AI Technical Summary

Technical Problem

Existing fouling control technologies, such as biocides and UV light-emitting devices, face environmental concerns and inefficiencies, necessitating an improved fouling control solution for submerged surfaces.

Method used

A fouling control light-emitting device with a source of light, an optical medium, and a fouling control coating comprising a non-curable hydrophilic-modified polysiloxane with specific refractive index and density characteristics, which transmits UV light to inhibit biofouling.

🎯Benefits of technology

The device provides effective fouling control with reduced environmental impact and maintains light transmission, offering a secondary fouling control mechanism even in case of light source failure, and is applicable to various submerged substrates.

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Abstract

A fouling control light-emitting device having a source of light, an optical medium that can transmit light, and a light-emitting surface, in which at least part or all of the light-emitting surface comprises a fouling control coating, wherein the fouling control coating 5 comprises a non-curable hydrophilic-modified polysiloxane liquid having a refractive index at 20 °C of less than 1.450 and a density at 23 °C of less than 1.07 g / ml.
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