UV curable coatings system for improved scratch resistance

The coatings system, featuring a primer and topcoat with specific monomers and silane-treated aluminum oxide, addresses the challenge of achieving balanced performance properties by significantly enhancing scratch resistance and maintaining other key characteristics.

WO2025059244A2 Publication Date: 2025-03-20SWIMC LLC
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Patent Information

Application Number
PCT/US2024/046298
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-13
Filing Date
2024-09-12
Publication Date
2025-03-20

AI Technical Summary

Technical Problem

Conventional coatings systems often struggle to achieve a balance between improved properties such as adhesion, chemical resistance, scratch resistance, and abrasion resistance without compromising other performance characteristics.

Method used

A coatings system comprising a primer and a topcoat, both containing difunctional (meth)acrylate ester monomers, multifunctional (meth)acrylates, and silane-treated aluminum oxide, which enhances scratch resistance when the concentration of aluminum oxide is increased in both the primer and topcoat.

Benefits of technology

The coatings system demonstrates improved scratch resistance, as measured by ASTM D7027 or BS EN 16094, while maintaining other performance properties, and can be applied to various substrates including vinyl flooring.

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Abstract

A coatings system for improved scratch resistance is provided. The coatings system comprises: 1) a primer comprising a difunctional (meth)acrylate ester monomer, a first multifunctional (meth)acrylate, and a first silane-treated aluminum oxide; and 2) a topcoat comprising a difunctional (meth)acrylate ester monomer, a second multifunctional (meth)acrylate, and a second silane-treated aluminum oxide. Further, the coatings system may be UV curable or another type of radiation curable. A method of preparing the coatings system and an article coated with the coatings system are also described.
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