Polyaspartic Resin
Feispartic F321
FEISPARTIC F321 is a solvent-free aminofunctional co-reactant for polyisocyanates, designed for high-performance coating systems requiring longer pot life and low-temperature drying. It provides excellent film fullness, leveling, gloss, weather resistance, color retention and gloss retention.

Typical Properties
| Index | Value |
|---|---|
| Appearance | Colorless to light yellow green transparent liquid |
| Hazen (Pt-Co) | ≤400 |
| Solid Content (%) | 85±2 |
| Amine value (mg KOH/g) | 140 ~ 160 |
| Amine Equivalent (g/mol) | 379 |
| Equivalently hydroxy content (%) | 4.48 |
| Viscosity (mpa.s/25℃) | 200 ~ 600 |
| Relative density (25℃) | 1.04±0.02 |
Applications
- Floor coatings and varnishes: suitable for formulating durable floor coatings and varnish systems.
- Anti-corrosion topcoats: used for steel structures, oil pipelines and other light- to heavy-duty protective coating applications.
Packing & Storage Information
Packing
200 Kgs/Drum, 20 Kgs/Drum
Shelf Life
FEISPARTIC F321 must be stored in airtight containers to prevent contact with moisture. Recommended storage temperature is below 30°C (≤86°F). The shelf life in the closed original container is 12 months.
Notice
- FEISPARTIC F321 is combustible and should be stored at the temperature below 30 ℃. 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 F321 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.
