Stain Resistance Additives Based on Fluorinated Chemistry for Coatings & Sealing Applications

Stain resistance additives based on fluorinated acrylics and fluorinated urethanes are advanced chemical solutions designed to enhance the performance of sealants and coatings. These additives provide superior protection against a wide range of stains, ensuring longevity and aesthetic appeal in treated surfaces. Their unique chemistry offers excellent hydrophobic and oleophobic properties, making surfaces highly resistant to water, oils, and other contaminants.

Chemistry and Mechanism

  • Fluorinated Acrylics : These polymers contain fluorine atoms attached to acrylic chains, providing superior water, oil, and stain repellence. The fluorine atoms create a low surface energy, making it difficult for contaminants to adhere to treated surfaces.

  • Fluorinated Urethanes : Urethanes, when modified with fluorine, offer enhanced flexibility, durability, and resistance to a wide range of chemicals. The fluorinated structure ensures deep penetration into porous materials, forming a protective barrier that resists stains without altering the surface's natural appearance.


Main Applications

  • Natural Stone :
    Fluorinated additives are ideal for use in sealing natural stone surfaces like limestone, travertine, and sandstone. These stones are porous and prone to staining from liquids like wine, oil, and coffee. A fluorinated stain-resistant coating creates an invisible barrier, protecting the surface without affecting the stone's natural beauty.

  • Pavers :
    Concrete and stone pavers are used in outdoor applications where they are exposed to harsh weather conditions and contaminants such as oil and grease from vehicles. Fluorinated acrylic and urethane-based coatings provide pavers with long-lasting protection against stains, dirt, and even algae growth.

  • Marble & Granite :
    Marble and granite are popular materials in both interior and exterior applications, such as countertops and facades. Their porous nature makes them susceptible to staining. A fluorinated coating offers superior protection, preserving their polished appearance while making them easier to clean and maintain.

  • Masonry :
    Masonry surfaces like bricks, concrete blocks, and stucco are often exposed to moisture and pollutants, which can lead to staining and degradation over time. Fluorinated urethane and acrylic additives enhance the stain resistance of masonry coatings, providing an extra layer of defense against water, oils, and environmental contaminants.


Key Benefits

  • Enhanced Stain Resistance : Fluorinated coatings repel both water- and oil-based stains, making them ideal for applications exposed to various contaminants.

  • Durability : Fluorinated urethanes add flexibility and resistance to environmental stressors, ensuring long-lasting protection.

  • Preserves Natural Appearance : The clear, thin nature of these additives ensures that the aesthetic qualities of stone, masonry, and other substrates are maintained.

  • UV and Chemical Resistance : These additives also provide excellent resistance to UV degradation and chemical exposure, further extending the lifespan of the coating.

  • Low Surface Energy : The presence of fluorine reduces the surface energy of coatings, preventing dirt, grime, and other contaminants from adhering easily.


Formulation and Compatibility

Stain-resistant additives based on fluorinated acrylics and urethanes can be easily integrated into both solvent-borne and water-borne coating systems. They are compatible with a wide range of sealants and coatings, offering formulators flexibility in designing products for various substrates and conditions.