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XF-250P
PET Bottle Recycled Polyester Polyol is an environmentally friendly aromatic polyester polyol produced from recycled PET bottles and high-performance raw materials. It combines sustainability, excellent flame retardancy, and superior thermal insulation performance, making it an ideal component for rigid polyurethane (PU) foam systems.
Designed for high flame retardant insulation applications, this recycled polyester polyol provides excellent compatibility with blowing agents, high dimensional stability, and outstanding fire resistance properties. It is widely used in PIR panels, PU sandwich panels, spray foam insulation, cold storage systems, and building insulation applications.
The production is a form of chemical upcycling:
Feedstock Preparation: Post-consumer PET bottles are collected, sorted, washed, and shredded into small flakes.
Reaction: The PET flakes are heated and agitated with an excess of a glycol (e.g., Diethylene Glycol) and a catalyst (e.g., zinc acetate).
Depolymerization: The long polymer chains of PET are broken down (depolymerized) by the glycol. The reaction transesterifies the PET, cutting the chains and capping them with hydroxyl groups.
Purification: The resulting mixture may be filtered to remove impurities (like pigments, labels) to yield the final PET polyester polyol.
Simplified Chemical Idea:PET (from bottles) + Glycol (e.g., DEG) → PET Polyester Polyol
Sustainable Solution
Produced with recycled PET materials, supporting circular economy and reducing environmental impact.
Helps customers achieve green building and sustainability targets.
Excellent Flame Retardancy
Aromatic structure provides enhanced fire resistance.
Suitable for high flame retardant PU/PIR insulation systems.
Improves char formation and reduces flame spread.
Superior Thermal Insulation Performance
Excellent foam cell structure control.
Compatible with pentane and other blowing agent systems.
Provides low thermal conductivity and long-term insulation performance.
Excellent Processing Performance
Good compatibility with polymeric MDI.
Stable viscosity and easy processing.
Suitable for continuous and discontinuous panel production.
| Advantages | Disadvantages |
|---|---|
| Cost-Effective: Significantly cheaper than virgin polyols, as it uses waste material. | ️Lower Hydrolytic Stability: Can degrade in consistently moist or acidic environments. |
| Environmental Benefit: Provides a valuable outlet for plastic waste, promoting a circular economy. | Variable Quality: The quality can depend on the purity of the PET waste stream. |
| ️ Superior Performance: Imparts excellent mechanical, thermal, and chemical resistance properties. | Color: Often has a yellow/brown color, which is unsuitable for clear or light-colored applications. |
| Good Flame Retardancy: The aromatic structure offers inherent flame resistance. | Higher Viscosity: Can be more challenging to pump and mix during processing. |
| Feature | PET Polyester Polyol | Conventional Polyester Polyol | Polyether Polyol |
|---|---|---|---|
| Feedstock | Recycled PET Bottles | Virgin Diacids & Glycols | Petroleum-derived Oxides |
| Cost | Low | Medium to High | Medium |
| Rigidity | High | High | Low to Flexible |
| Hydrolytic Stability | Low | Low | High |
| Chemical Resistance | High | High | Low to Medium |
| Primary Use | Rigid Foam | Rigid Foam, Elastomers | Flexible Foam, Elastomers |
