F520 – Versatile Solvent-Free Resin for High-Performance Coatings

F520: A Leading Polyaspartic Resin

F520 is a multifunctional core resin engineered for eco-friendly, solvent-free applications. As one of the flagship offerings in Feiyang Protech’s polyaspartic resin lineup, it incorporates an active secondary amine within its molecular framework, which allows rapid and efficient crosslinking with -NCO groups. Thanks to its stable chemical characteristics and exceptional performance, F520 has established itself as a long-standing standard within the polyaspartic resin series.

Precise, Reliable, and Consistent Quality

F520 presents as a clear, colorless to light yellow-green liquid with a haze level of ≤250 Hazen (Pt-Co), ensuring a stable and transparent appearance. Its solid content is 96 ± 2%, with an amine value of 185–200 mg KOH/g, an amine equivalent of 290 g/mol, and a corresponding hydroxyl equivalent of 5.84%. At 25 °C, viscosity ranges from 800 to 2000 mPa·s, and relative density is 1.06 ± 0.02. These tightly controlled physical and chemical properties provide the perfect balance of high solids and low viscosity, supporting efficient reactivity and crosslinking while delivering excellent handling and application performance.

A stringent set of physico-chemical parameters underlies F520’s strengths, guaranteeing reactive efficiency, robust crosslinking, and smooth application. This foundation ensures stable large-scale production and reliable high-quality coating results.

Product Advantages

Eco-Friendly, Solvent-Free, and Highly Formulation-Friendly
F520 embodies environmentally responsible coating practices, being entirely solvent-free and eliminating pollution and safety concerns from volatile solvents. Its low viscosity and extended pot life make it ideal for formulating high-solids or solvent-free coatings. Moreover, it blends seamlessly with other products in the polyaspartic polyurea series, offering flexible compatibility and greatly expanding formulation possibilities.

Cross-Industry Applications – The All-Round Coating Solution

Thanks to its outstanding overall performance, F520 serves as a versatile solution across multiple industries:

• Automotive Coatings: When combined with the classic F420 resin, it enhances film fullness, gloss, and hardness, making it an excellent base for universal color paste grinding in automotive repair paints.

• Industrial and Wood Coatings: Its superior abrasion and weather resistance meet the demands of high-hardness applications.

• Heavy-Duty Corrosion Protection: F520 creates a durable protective barrier suitable for steel structures, oil pipelines, and a variety of light- and heavy-duty anticorrosive topcoats.

• Specialty Applications: The resin is also effective in polystyrene foam coatings, wind turbine blade gel coats, and putty formulations. It provides strong adhesion to plastics such as ABS and PC, multiple metals, and good compatibility with hydroxy acrylate resins and CAB, making it a valuable component across diverse coating projects.

Trusted Raw Material for Solvent-Free Coatings

With its well-established formulation, dependable quality, and broad performance capabilities, F520 continues to be a reliable choice for high-end solvent-free coatings, positioning it as the preferred resin for environmentally friendly, high-performance paints.

Feiyang Protech remains committed to advancing polyaspartic resin technology, introducing innovative, efficient, and high-performance products that drive quality and sustainable growth within the coatings industry.

For further technical details and application guidance, please contact: marketing@feiyang.com.cn