Polyaspartic Resin
Feispartic F528
Alternative to Desmophen® NH 1520C
FEISPARTIC F528 is a solvent-free aminofunctional co-reactant for polyisocyanates, designed for high-solids and solvent-free two-component polyaspartic coating systems and polyurethane topcoats. It combines low viscosity with excellent film build, leveling, gloss, hardness, wear resistance, strong adhesion to plastics and metals, and durable resistance to weathering, water, solvents, chemicals and salt spray.

Typical Properties
| Index | Value |
|---|---|
| Appearance | Colorless to light yellow green transparent liquid |
| Hazen (Pt-Co) | ≤250 |
| Solid Content (%) | 96±2 |
| Amine value (mg KOH/g) | 185-200 |
| Equivalent weight (g/mol) | 290 |
| Hydroxyl value Equivalent (%) | 5.84 |
| Viscosity (mpa.s/25℃) | 800-2000 |
| Relative density (25℃) | 1.06±0.02 |
Applications
- Suitable for automotive coatings, where it helps improve film build, gloss and hardness.
- Recommended for high-performance industrial coatings and wood coatings, especially where high hardness and excellent wear resistance are required.
- Suitable for light- to heavy-duty anti-corrosion coatings used on steel structures, oil pipelines and similar substrates.
- Can be used in coatings for styrene foam landscape applications.
- Suitable for wind blade coating systems, including gel coats, putties and topcoats.
- With high solids, low viscosity, good wetting properties and broad compatibility, this resin is also well suited for grinding high-solids color pastes, especially for automotive refinish coatings.
Packing & Storage Information
Packing
200 Kgs/Drum, 10 Kgs/Drum
Shelf Life
FEISPARTIC F528 must be stored in airtight containers to prevent contact with moisture. Recommended storage temperature is below 40°C (≤104°F). The shelf life of FEISPARTIC F528 in the closed original container is 12 months.
Notice
- FEISPARTIC F528 is combustible and should be stored at a low temperature of 40 ℃. It should be kept away from fire source and stored in a cool, dry and ventilated environment. The storage period is 12 months.
- The coating formulated with FEISPARTIC F528 should be tested for performance after one week’s maintenance.
Why Choose Feiyang Protech
In-house R&D lab
Continuous innovation and quality assurance
3 production plants
Stable supply and global service
26,000-ton annual capacity
Strong capacity to support your growth
200+ Customers in 30+ Countries
Trusted by coating manufacturers worldwide
80+ patents
Continuous innovation backed by independent intellectual property
Get In Touch
With The Feiyang Protech Team
Feiyang Protech has an in-house R&D lab since 2004 with 40 engineers, providing custom formulas and technical support. The company operates three plants with 60,000 square meters of production area, serving over 200 firms in more than 30 countries. It offers factory-direct supply with economies of scale, a 26,000-ton capacity, and over 30 years of industry experience. Feiyang Protech also holds 84 invention patents, 17 industry standards, and ECOVADIS Silver certification.
