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XF-2402N
XF-2402N in rigid foam applications is an aromatic polyester polyol mainly used for rigid polyurethane (PUR) and polyisocyanurate (PIR) panel systems. It is designed for continuous and discontinuous insulated panel production, including cold room panels, wall panels, roof panels, and sandwich panels.
Cold storage insulation panels
Refrigeration panels
Roof and wall insulation boards
Continuous production lines for rigid panels
Discontinuous press panel systems
Good compatibility with pentane and hydrocarbon blowing agents
Improved green strength during panel lamination
Good dimensional stability
Enhanced flame resistance due to aromatic structure
Fine cell structure and improved insulation performance
Good adhesion to metal facings
These characteristics are especially important in PIR panels requiring:
High compressive strength
Low thermal conductivity
Good fire performance
Stable foam processing on high-speed lines
Typical values for the PS-2412/2402 series are approximately:
| Characteristic | Value |
| Color | Transparent |
| Hydroxylvalue(mgKOH/g) | 240±10 |
| Acidity(mgKOH/g) | ≤1.5 |
| Moisture（%） | ≤0.1 |
| Viscosity(25℃,cps) | 8000±1500 |
A common PIR panel formulation using this polyester polyol may include:
| Component | Parts by Weight (pbw) |
|---|---|
| Polyester Polyol PS-2402/2412 | 60–80 |
| Polyether Polyol | 20–40 |
| Cyclopentane | 10–18 |
| Silicone Surfactant | 1.5–2.5 |
| PIR Catalyst Package | 3–8 |
| Flame Retardant | 10–20 |
| Polymeric MDI | Index 220–320 |
The exact formulation depends on:
Panel density
Fire rating requirement
Continuous vs discontinuous line
Pentane or HFO blowing agent system
Required lambda value
Compared with standard polyether polyols, aromatic polyester polyols like STEPANPOL 2402N provide:
Better fire performance
Higher char formation
Higher rigidity
Improved thermal resistance
Better dimensional stability at elevated temperatures
Parameters:
| Characteristic | Value |
| Color | Transparent |
| Hydroxylvalue(mgKOH/g) | 240±10 |
| Acidity(mgKOH/g) | ≤1.5 |
| Moisture（%） | ≤0.1 |
| Viscosity(25℃,cps) | 8000±1500 |
Package & Storage:
200KGS/DRUM;1000KGS/IBC
XF-2402N has a retest period of 12 months in unopened containers. Storage in
sealed containers at temperatures of 60-95 oF (15-35 oC) is recommended.
