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<p>The demand for sustainable coating has increased significantly and this impelled us to explore the challenges introducing an eco-friendly alkyd resin. We developed a high-performance resin for our enamel paints that would stand up to the weather and last based on renewable materials such as vegetable oils and bio-based polyols with a low environmental footprint. We carried out all tests on the new resin including acid value, viscosity, dry time and adhesion. The enamel paint went through both accelerated weathering and 12 months of actual outdoor exposure to assess weathering resistance. The results showed outstanding UV stability and very little chalk and color fade versus typical alkyd paints. The gloss retention was better than expected due to optimal cross-linking density and antioxidant properties of the resin. Abrasion resistance was done according to ASTM D4060 and the impact resistance according to ASTM D2794. We achieved a pencil hardness of 2&#xa0;H and good flexibility (1&#xa0;mm conical mandrel bend test). The chemical resistance was assessed according to solvents, acids and alkalis and showed very little film damage which indicated excellent performance under extraordinarily tough conditions. In this study the enamel paint has superior mechanical durability (2&#xa0;H pencil hardness, high abrasion/impact resistance), strong UV resistance (&gt; 90% gloss retention after 1000&#xa0;h QUV testing) were among the many outstanding qualities of the synthesized resin. Tests for outdoor and accelerated weathering verified that there was no chalking and little color fading after a year.</p> Graphical abstract <p></p>

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Development of novel eco-friendly alkyd resin for weather resistance and durable enamel paint

  • 期刊论文

  • 发表日期：

    2026年5月2日

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  • Abdullah Arshad,
  • Murid Hussain,
  • Parveen Akhter

摘要

The demand for sustainable coating has increased significantly and this impelled us to explore the challenges introducing an eco-friendly alkyd resin. We developed a high-performance resin for our enamel paints that would stand up to the weather and last based on renewable materials such as vegetable oils and bio-based polyols with a low environmental footprint. We carried out all tests on the new resin including acid value, viscosity, dry time and adhesion. The enamel paint went through both accelerated weathering and 12 months of actual outdoor exposure to assess weathering resistance. The results showed outstanding UV stability and very little chalk and color fade versus typical alkyd paints. The gloss retention was better than expected due to optimal cross-linking density and antioxidant properties of the resin. Abrasion resistance was done according to ASTM D4060 and the impact resistance according to ASTM D2794. We achieved a pencil hardness of 2 H and good flexibility (1 mm conical mandrel bend test). The chemical resistance was assessed according to solvents, acids and alkalis and showed very little film damage which indicated excellent performance under extraordinarily tough conditions. In this study the enamel paint has superior mechanical durability (2 H pencil hardness, high abrasion/impact resistance), strong UV resistance (> 90% gloss retention after 1000 h QUV testing) were among the many outstanding qualities of the synthesized resin. Tests for outdoor and accelerated weathering verified that there was no chalking and little color fading after a year.

Graphical abstract