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XF-280, XF-60
The Super-Bond PU Adhesive Polyester Polyol presents itself as a clear to slightly yellowish viscous liquid, characterized by a mild, characteristic odor typical of premium esterified formulations. As a foundational raw material, it is engineered specifically for formulating advanced polyurethane adhesives. By reacting efficiently with polyisocyanates, these polyols create dense polymer networks that deliver exceptional adhesion, thermal stability, and structural flexibility. Available in two distinct models—XF-280 and XF-60—this product allows formulators to precisely calibrate their adhesive systems. The XF-280 grade features a hydroxyl value of 280±20 mgKOH/g, making it ideal for formulating rigid, high-strength bonds. Conversely, the XF-60 grade, with a hydroxyl value of 60±5 mgKOH/g, provides the necessary elongation and impact absorption for flexible joints. This critical versatility makes the polyol highly suitable for reactive hot-melt, solvent-borne, and water-based polyurethane dispersion (PUD) systems, serving essential roles across flexible packaging, automotive assembly, construction sealing, and furniture lamination industries.
When formulated into final adhesives, this polyester polyol creates a highly cross-linked network that securely anchors to a wide variety of substrates, including treated metals, porous wood, and low-surface-energy plastics. The resulting bond exhibits outstanding tensile and tear strength, ensuring structural integrity under continuous mechanical stress. Furthermore, the specialized ester linkages provide inherent resistance to elevated temperatures and petroleum-based oils, maintaining bond stability even when exposed to demanding industrial environments or under-the-hood automotive conditions.
Formulators can achieve the exact balance of rigidity and elasticity required for their specific use case. The distinct molecular weights of the XF-280 and XF-60 models enable precise tailoring. XF-280 promotes higher cross-link density for load-bearing applications, whereas XF-60 introduces longer flexible segments to absorb impact and vibration. Additionally, these formulations are optimized to support low-VOC adhesive development, aligning with modern green chemistry standards to help manufacturers reduce the overall carbon footprint of their end products while maintaining excellent processability across different dispersion methods.
While offering superior mechanical strength, polyester-based polyurethanes naturally exhibit a higher sensitivity to moisture, acids, and alkaline environments compared to their polyether counterparts. Prolonged exposure to high humidity or direct water contact can lead to gradual degradation of the ester bonds through hydrolysis. To mitigate this structural breakdown, formulators should consider incorporating specific hydrolysis stabilizers or utilizing moisture-barrier packaging for the final adhesive products, especially when deployed in demanding exterior construction or marine environments.
In automotive manufacturing, these polyols are instrumental in creating adhesives for interior trim lamination, headliner bonding, and structural component assembly, where they must endure extreme cabin temperature fluctuations and constant road vibration. For the construction sector, they form the backbone of heavy-duty wood binders and expansion joint sealants, providing reliable adhesion that accommodates the natural thermal expansion and contraction of building materials without fracturing or losing grip.
Furniture producers utilize these polyols to formulate adhesives that bond foam, fabric, and engineered wood, resulting in durable, aesthetically pleasing composite structures that resist delamination over years of daily use. In the packaging sector, particularly for food-grade applications, the product complies with stringent safety standards. It is used to manufacture adhesives that laminate multiple film layers (such as PET, PE, and BOPP), ensuring strong barrier properties, preventing layer separation during sterilization processes, and maintaining strict food contact safety compliance.
| Product Model | Hydroxyl value (mgKOH/g) | Acid Value (mgKOH/g) | Moisture (%) | Viscosity (CPS 25℃) |
| XF-280 | 280±20 | ≤3.0 | ≤0.1 | 15000-20000 |
| XF-60 | 60±5 | ≤2.0 | ≤0.1 | 20000±5000 |
Tailored Performance Grades: The specific engineering behind XF-280 and XF-60 provides formulators with targeted solutions rather than generic alternatives. This focused approach allows for rapid formulation adjustments, significantly reducing research and development cycles for specialized adhesive projects.
Consistent Quality & Strict Testing: We implement rigorous quality control protocols, including advanced shear strength evaluations and continuous batch monitoring. This ensures that critical parameters—such as viscosity, acid value, and moisture content—remain highly stable, guaranteeing reliable batch-to-batch consistency for your manufacturing lines.
Application Expertise & Support: Beyond supplying raw materials, our technical specialists actively collaborate with your engineering teams. We assist in optimizing adhesive formulations, troubleshooting processing challenges, and fine-tuning curing profiles to match your exact application requirements.
Efficient Supply Chain Management: Recognizing the fast-paced nature of industrial production, we maintain strategic inventory levels and streamlined logistics networks. This proactive supply chain approach ensures prompt material delivery, preventing costly downtime and keeping your production schedules strictly on track.
