A catechol-functionalized modified marine antifouling coating

By introducing catechol groups into the silicone marine antifouling coating and modifying the curing agent using RAFT technology, the problem of poor adhesion between the coating and the substrate was solved, achieving stable adhesion between the coating and the substrate and maintaining the antifouling effect.

CN118652627BActive Publication Date: 2026-06-19CHANGSHU INSTITUTE OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGSHU INSTITUTE OF TECHNOLOGY
Filing Date
2024-06-19
Publication Date
2026-06-19

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Abstract

This invention discloses a catechol-functionalized fouling-releasing marine antifouling coating. Based on the catechol groups, the active ingredient in the secretions of mussels, a marine organism, the catechol groups are modified into a siloxane curing agent via a reversible addition-fragmentation chain transfer method. This ensures that the curing agent component of the fouling-releasing silicone coating has high adhesion. After mixing, curing, and cross-linking, the prepared coating can firmly adhere to the surface of various substrates. Simultaneously, the catechol-functionalized curing agent ensures that the main chain molecular structure of the cured coating remains a hydrophobic and smooth polysiloxane resin, thus ensuring excellent antifouling performance during service. This coating can be applied to the antifouling of marine facilities, and is particularly suitable for various marine facilities that are submerged in seawater for extended periods.
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