A two-part hybrid epoxy-polyurethane coatings system and coatings formed therefrom

The two-part hybrid epoxy-polyurethane coatings system addresses the issues of scratching and cracking in waterborne latex coatings and health risks in polyurethane coatings by forming an interpenetrating polymer network, providing improved mechanical and chemical resistance with reduced VOCs and safer curing.

WO2025178921A1 Publication Date: 2025-08-28SWIMC LLC
3 Cites 1 Cited by

Patent Information

Application Number
PCT/US2025/016420
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-02-22
Filing Date
2025-02-19
Publication Date
2025-08-28

AI Technical Summary

Technical Problem

Existing waterborne latex-based coatings are prone to scratching and cracking due to environmental conditions, while two-component polyurethane coatings pose environmental and health risks during mixing and curing.

Method used

A two-part hybrid epoxy-polyurethane coatings system comprising a resin component with a polyurethane resin and an epoxy resin, and a crosslinking component with a curing agent and catalyst, forming an interpenetrating polymer network without free isocyanates, allowing for controlled molecular weight and improved mechanical properties.

Benefits of technology

The system achieves a cured coating with enhanced mechanical and chemical resistance, reduced VOCs, and safer curing processes, while maintaining flexibility and adhesion, suitable for various industrial applications.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

A two-part coatings system is provided. The system includes a resin component and a crosslinking component. The resin component includes a mixture of an epoxy resin and a polyurethane resin. The crosslinking component includes a curing agent and a catalyst. The polyurethane resin includes a donor for a Michael addition reaction and an acceptor for a Michael addition reaction. The catalyst is configured to facilitate a Michael addition reaction between the donor and the acceptor of the polyurethane resin. The curing agent is configured to react with the epoxy resin.
Need to check novelty before this filing date? Find Prior Art