Patent No. EP4118146 (titled "Silylated Sealing Composition With Improved Adhesion On Metallic Substrates") was filed by Bostik on Mar 1, 2021. The application was issued on May 14, 2025.
Moisture-curable silylated composition for high-performance sealants and adhesives, particularly for metal substrate applications. The composition combines a moisture-curable prepolymer with a silylated cross-linking agent, featuring terminal isocyanate groups. The formulation provides exceptional adhesion to aluminum substrates, with enhanced performance when exposed to water. The composition also offers improved thermal stability and resistance to environmental degradation. The silylated cross-linking agent enables rapid cross-linking upon exposure to moisture, while the prepolymer provides a strong, durable bond.

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