Polyether polyol s 5220 is a premium-grade polyether polyol specifically engineered for polyurethane elastomers, industrial adhesives, and high-performance polymer materials. In modern polyurethane synthesis and formulation development, chemists frequently encounter technical bottlenecks such as uncontrollable reaction kinetics caused by fluctuating hydroxyl values, poor flowability due to high viscosity, and side reactions or bubbling triggered by excess moisture.
To guarantee batch-to-batch consistency in large-scale manufacturing alongside superior mechanical properties, Senova presents Polyether polyol s 5220. Featuring a strictly controlled hydroxyl value (54 – 58 mgKOH/g), moderate viscosity (270- 370mPa.s at 25℃), and ultra-low moisture content (＜ 0.05%), Polyether polyol s 5220 provides an ideal flexible backbone segment while ensuring smooth, predictable prepolymerization.
1. Why Choose Polyether polyol s 5220?
While adhering to stringent environmental and safety standards, Polyether polyol s 5220 delivers four core technical advantages for industrial polyurethane formulations:
- 🧪 Precisely Controlled Hydroxyl Value (54- 58mgKOH/g) The narrow hydroxyl value specification ensures precise stoichiometric ratios during reaction with isocyanates (-NCO), enabling consistent control over prepolymer molecular weight, hardness, and resilience.
- 💧 Ultra-Low Moisture Content (＜ 0.05%) Minimizing free water prevents unwanted -NCO side reactions that generate carbon dioxide gas, effectively eliminating pinholes, micro-voids, or foaming defects in solid elastomer parts.
- ⚖️ Optimal Application Viscosity (270- 370mPa.s at 25℃) Exhibits excellent fluidity at ambient temperatures, allowing effortless, homogeneous blending with chain extenders, catalysts, and functional additives to improve casting and coating operations.
- 🛡️ Outstanding Compatibility & Formulation Versatility Functions as a versatile foundational polyol resin suitable across polyurethane elastomers, sealants, adhesives, and flexible casting systems.
2. Core Application Fields
Polyether polyol s 5220 is tailored for high-demand polyurethane applications requiring mechanical toughness, hydrolysis resistance, and smooth processing:
2.1 High-Performance Polyurethane Elastomers (PU Elastomers)
Serves as a primary soft-segment polyol, imparting high tensile strength, abrasion resistance, tear strength, low-temperature flexibility, and dynamic mechanical endurance.
2.2 Industrial Polyurethane Adhesives & Sealants
Utilized in formulating two-component or single-component moisture-curing polyurethane adhesives, delivering strong inter-layer bonding strength and long-term aging resistance.
3. Technical Data Sheet (TDS) & Application Guidelines
| Physical & Chemical Properties PDF | Specification Values PDF | Application & Handling Notes PDF |
| Appearance | Viscous liquid | Pre-Testing: Pre-testing (including on-site trials) is recommended prior to commercial use to determine exact suitability. |
| Hydroxyl Value | 54 – 58mgKOH/g | Hygroscopic Precaution: Product absorbs moisture readily; store in clean, dry, leak-free original iron drums. |
| Moisture Content | ＜ 0.05% | Storage Conditions: Store in a well-ventilated warehouse at ambient temperature. Shelf life is 12 months from production date. |
| Viscosity (25℃) | 270- 370mPa.s | Safety & Transport: High flash point, combustible but non-explosive. Classified as non-hazardous for safe transport. |
4. Additive Synergy & System Performance Enhancement
When developing PU elastomers or adhesives based on Polyether polyol s 5220, efficient air release and surface tension reduction are critical to achieving defect-free, bubble-free film structures.
To eliminate entrained air during mixing or casting and optimize surface leveling, pair this polyol with high-efficiency silicone-free defoamers and acrylic leveling agents from our sister site www.rk-chem.com. These specialty additives work synergistically with Polyether polyol s 5220 to maximize structural density, surface aesthetics, and mechanical strength.
Request a free laboratory testing sample, complete TDS documentation, or starting formulation guidance by contacting our technical team: senova-chem.com/contact.