F420 Polyaspartic Resin — Making Premium Coatings More Efficient and Eco-Friendly

Feiyang Protech’s F420 (equivalent to Desmophen® NH1420) is a fast, well-balanced polyaspartic ester resin designed to help formulators achieve high performance with higher efficiency. 

Solvent-Free + High Reactivity: Green and Efficient at the Same Time

As industrial coatings move toward greener solutions, regulations are increasingly driving lower-VOC technologies and the gradual replacement of highly polluting, solvent-rich systems. In this context, solvent-free and high-solids approaches have become a primary direction for the coatings industry.

F420 is solvent-free, with a viscosity of roughly ~1,000 cps, making it suitable for formulating high-solids or solvent-free coatings while helping reduce VOC emissions at the source. This supports green manufacturing goals and contributes to a better working environment for coating applicators.

Just as importantly, F420 delivers real productivity gains. When paired with an HDI trimer, it can achieve 15-minute touch dry time and 40-minute hard dry time—significantly faster than conventional systems. This faster turnaround improves efficiency in industrial, anticorrosion, waterproofing, and flooring applications—shortening project cycles, lowering application costs, and supporting cost-reduction and efficiency initiatives.

Balanced, All-Around Performance You Can Rely On

The coating film formed by F420 can be viewed as a truly well-rounded performer across the properties that matter most in real-world coatings:

1. Premium appearance: High build, excellent leveling, and high gloss—ideal for anything from mirror-like automotive finishes to the crystal-clear depth expected in premium wood coatings.
2. Strong mechanical strength: >40 MPa strength, with excellent abrasion and impact resistance—providing a solid foundation for robust mechanical performance.
3. Powerful protection: Outstanding weatherability, water resistance, solvent resistance, acid/alkali resistance, and salt-spray resistance—reliable long-term protection for outdoor steel structures, waterproofing under long-term immersion, and wind turbine blade protection under continuous operation.
4. Excellent adhesion: Strong adhesion to a wide range of substrates, including carbon steel, aluminum alloys, various ferrous and non-ferrous metals, ABS/PC/PVC plastics, fiberglass, wood, concrete, leather, rubber, foam, and more.
5. High compatibility: Blends well with most acrylic resins, fluorocarbon resins, petroleum resins, CAB, and other materials.
6. Wide tunability: From rigid 2H hardness systems to elastic systems with 400% elongation and 25 MPa tensile strength. Cure speed can be tuned from ~40-minute thumbprint-dry to several hours, and pot life can be adjusted from 5 minutes to several hours.

Versatile by Nature: Multi-Scenario Fit, Maximum Practical Value

F420 can serve as a main resin in coatings, adhesives, and composites, and it can also be used as a chain extender and main resin in SPUA (spray polyurea elastomer) systems.

• Premium paints: Automotive coatings, defense coatings, and more—enhancing gloss and appearance, accelerating cure, and improving overall eco-efficiency.
• Anticorrosion coatings: Steel structures, oil pipelines, construction machinery, ships, and other light- and heavy-duty anticorrosion scenarios—delivering durable, long-term protection.
• Specialty materials: Foam landscape decorative coatings, concrete waterproofing materials, grout/sealant products, and other applications requiring specialized functionality.
• New energy: Gelcoat, putty, topcoat, and leading-edge protection for wind turbine blades to meet stringent wind power requirements; plus adhesives for EV batteries, pack protection, and chassis protection for new energy vehicles.

From solvent-free efficiency to balanced all-around performance—and from formulation flexibility to true multi-scenario adaptability—Feiyang Protech’s F420 polyaspartic ester resin brings the philosophy of “Technology Helps You Soar” to life through practical, measurable performance. Whether you are a coatings professional or a user with premium finishing needs, this multifunctional resin is well worth evaluating in your next formulation.

Feiyang Protech has been specializing in the production of raw materials for polyaspartic coatings for 30 years and can provide polyaspartic resins, hardeners and coating formulations. Feel free to contact us: marketing@feiyang.com.cn