For Fire-Resistant Coatings
Micronized Pentaerythritol
The premium carbon source engineered for ultra-smooth coating films, superior char expansion, and stable dispersion in APP-based formulation systems.
D50
2-15 um
Char-Forming
Dense protective layer
Fire Protection
For coating systems
The Dispersion Challenge
Finer. More Uniform. Significantly Better Performance.
Coarser particles lead to poor dispersion, weak interfacial bonding, and compromised fire performance. Our micronized pentaerythritol solves this at the source.
* Note: The above curve represents typical particle size distribution and does not constitute a product specification.
Micronized Pentaerythritol
- Narrow particle size distribution
- Uniform dispersion
- Smooth film with low defects
- Optimized intumescent performance
Conventional Pentaerythritol
- Wide particle size distribution
- Agglomeration and sedimentation
- Surface defects and pinholes
- Uneven foaming, weak char structure
How It Works
Strong Char. Stronger Protection.
Pentaerythritol acts as a carbon source in intumescent systems. Under heat, it promotes dehydration and crosslinking, forming a stable, expanded char that insulates the substrate and blocks heat and mass transfer.
1. Acid Activation
Under heat, Ammonium Polyphosphate (APP) decomposes to release phosphoric acid, triggering the IFR reaction.
2. Dehydration & Crosslinking
Our Pentaerythritol reacts rapidly with the acid, acting as a crucial carbon backbone to form a dense ester network.
3. Foaming
Blowing agents (like Melamine) release non-combustible gases, expanding the softened carbon layer into a thick, porous structure.
4. Char Layer
A stable, highly insulating char layer is formed, completely blocking heat and oxygen transfer to the underlying polymer.
Promotes Intumescence
Enhances Char Integrity
Reduces Heat Release
Improves Fire Resistance
Key Benefits for Formulators
Designed for Formulation Excellence
Ultra-Smooth Film
Ideal for high-end indoor/outdoor thin-film intumescent coatings.
Low Water Sensitivity
High purity limits moisture absorption, preventing coating blistering and ensuring long-term weatherability.
Broad Compatibility
Seamlessly integrates into water-based and solvent-based resins (Acrylic, Epoxy, Polyurethane).
Superior Expansion Ratio
Maximizes the synergistic efficiency with APP to form a robust protective shield.
Recommended Grades
Tailored Particle Sizes for Coating Performance
| Grade | D50 (um) | Particle Size Range (um) | Typical Applications | Key Features |
|---|---|---|---|---|
| NC-PE02 | 2 +/- 1 | 0.5 - 5 | Thin-film intumescent coatingsWood coatings | Ultra-fine, smooth filmHigh reactivity |
| NC-PE05 | 5 +/- 2 | 1 - 10 | General intumescent coatingsSteel coatings | Balanced performanceWide compatibility |
| NC-PE10 | 10 +/- 3 | 2 - 20 | Heavy-duty coatingsMarine coatings | High expansionStrong char structure |
| NC-PE15 | 15 +/- 5 | 5 - 30 | Putty & thick-film systemsSpecial functional coatings | Low water sensitivityStable dispersion |
* Custom particle size distribution available upon request.
Our Customers
Serving Global Leaders in Fire Safety
Coating Formulators
Develop high-performance, compliant formulations with confidence.
Flame-Retardant Coating Manufacturers
Reliable raw materials for stable production and consistent quality.
Building Materials Distributors
High-quality additives that add value to your product portfolio.
Inquiry Support
Tell Us Your Needs. We'll Get Back Within 12 Hours
Share your application and performance targets. Our technical team will provide the most suitable grade recommendation and support.
12-hour response promise (working days)
Application-focused recommendations
Confidentiality assured