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Pentane System Polyester Polyol is a low-viscosity polyol specifically formulated for compatibility with pentane-based blowing agents (n-pentane, isopentane) in rigid polyurethane foam production. Designed to address environmental concerns over HFCs and HCFCs, this polyol enables low-global-warming-potential (GWP) foam systems with GWP ≤5. Its molecular structure features hydrophobic alkyl chains and controlled hydroxyl distribution, ensuring excellent solubility with pentane (miscibility ≥95% at 25°C). Key properties include a hydroxyl number of 300–400 mg KOH/g, viscosity of 5,000–10,000 cps at 25°C, and functionality of 3.0–3.2, supporting efficient foam expansion and closed-cell formation.
Pentane Compatibility
The hydrophobic backbone minimizes phase separation with pentane, ensuring uniform blowing and closed-cell content ≥90% in rigid foams. This reduces thermal conductivity and improves insulation efficiency (λ-value ≤0.022 W/m·K).
Processing Stability
Exhibits consistent reactivity with isocyanates, maintaining cream time (30–60 seconds) and rise time (2–4 minutes) across production batches. This stability supports continuous extrusion and molding processes in high-volume manufacturing.
Environmental Performance
Enables compliance with EU F-gas Regulation and EPA SNAP by replacing high-GWP blowing agents. Foams produced with this polyol achieve ozone depletion potential (ODP = 0) and low VOC emissions (≤5 ppm).
Mechanical Integrity
Rigid foams formulated with this polyol demonstrate compressive strength ≥1.0 MPa and dimensional stability (ΔV ≤1.5% after 7 days at 70°C/95% RH), suitable for structural and insulation applications.
Refrigeration and Appliances
Refrigerator Insulation: Used in PU foam cores for fridge/freezer walls, providing long-term thermal resistance (λ-value ≤0.021 W/m·K) and reducing energy consumption by 15–20%.
Cold Storage Panels: Ideal for walk-in freezers, maintaining insulation performance at temperatures as low as -40°C without foam cracking.
Building Insulation
Insulated Panels: Enhances thermal efficiency in PU/PIR sandwich panels for walls and roofs, meeting energy code requirements (e.g., IECC 2021) for commercial buildings.
Injection Foam: Used in wall cavity insulation, expanding to fill gaps with closed-cell content ≥92% for airtight performance.
Packaging Solutions
Protective Foam: Creates lightweight, shock-absorbing foam inserts for electronics and fragile goods, with density 30–40 kg/m³ and impact resistance ≥5 J.
Structural Packaging: Provides load-bearing support in shipping crates, replacing polystyrene with a recyclable PU alternative.
Container: Use sealed stainless steel drums to prevent pentane absorption and moisture ingress.
Conditions: Store at 15–30°C, avoiding temperatures below 10°C to prevent viscosity increases.
Handling: Keep away from ignition sources (flash point ≥90°C) and ensure ventilation to prevent pentane vapor buildup.
Parameter | Value |
Appearance | Clear to pale yellow liquid |
Hydroxyl Number | 300–400 mg KOH/g |
Viscosity (25°C) | 5,000–10,000 cps |
Functionality | 3.0–3.2 |
Water Content | ≤0.15% |
Acid Value | ≤1.0 mg KOH/g |
Density (25°C) | 1.02–1.06 g/cm³ |
Pentane System Polyester Polyol is a low-viscosity polyol specifically formulated for compatibility with pentane-based blowing agents (n-pentane, isopentane) in rigid polyurethane foam production. Designed to address environmental concerns over HFCs and HCFCs, this polyol enables low-global-warming-potential (GWP) foam systems with GWP ≤5. Its molecular structure features hydrophobic alkyl chains and controlled hydroxyl distribution, ensuring excellent solubility with pentane (miscibility ≥95% at 25°C). Key properties include a hydroxyl number of 300–400 mg KOH/g, viscosity of 5,000–10,000 cps at 25°C, and functionality of 3.0–3.2, supporting efficient foam expansion and closed-cell formation.
Pentane Compatibility
The hydrophobic backbone minimizes phase separation with pentane, ensuring uniform blowing and closed-cell content ≥90% in rigid foams. This reduces thermal conductivity and improves insulation efficiency (λ-value ≤0.022 W/m·K).
Processing Stability
Exhibits consistent reactivity with isocyanates, maintaining cream time (30–60 seconds) and rise time (2–4 minutes) across production batches. This stability supports continuous extrusion and molding processes in high-volume manufacturing.
Environmental Performance
Enables compliance with EU F-gas Regulation and EPA SNAP by replacing high-GWP blowing agents. Foams produced with this polyol achieve ozone depletion potential (ODP = 0) and low VOC emissions (≤5 ppm).
Mechanical Integrity
Rigid foams formulated with this polyol demonstrate compressive strength ≥1.0 MPa and dimensional stability (ΔV ≤1.5% after 7 days at 70°C/95% RH), suitable for structural and insulation applications.
Refrigeration and Appliances
Refrigerator Insulation: Used in PU foam cores for fridge/freezer walls, providing long-term thermal resistance (λ-value ≤0.021 W/m·K) and reducing energy consumption by 15–20%.
Cold Storage Panels: Ideal for walk-in freezers, maintaining insulation performance at temperatures as low as -40°C without foam cracking.
Building Insulation
Insulated Panels: Enhances thermal efficiency in PU/PIR sandwich panels for walls and roofs, meeting energy code requirements (e.g., IECC 2021) for commercial buildings.
Injection Foam: Used in wall cavity insulation, expanding to fill gaps with closed-cell content ≥92% for airtight performance.
Packaging Solutions
Protective Foam: Creates lightweight, shock-absorbing foam inserts for electronics and fragile goods, with density 30–40 kg/m³ and impact resistance ≥5 J.
Structural Packaging: Provides load-bearing support in shipping crates, replacing polystyrene with a recyclable PU alternative.
Container: Use sealed stainless steel drums to prevent pentane absorption and moisture ingress.
Conditions: Store at 15–30°C, avoiding temperatures below 10°C to prevent viscosity increases.
Handling: Keep away from ignition sources (flash point ≥90°C) and ensure ventilation to prevent pentane vapor buildup.
Parameter | Value |
Appearance | Clear to pale yellow liquid |
Hydroxyl Number | 300–400 mg KOH/g |
Viscosity (25°C) | 5,000–10,000 cps |
Functionality | 3.0–3.2 |
Water Content | ≤0.15% |
Acid Value | ≤1.0 mg KOH/g |
Density (25°C) | 1.02–1.06 g/cm³ |
