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High hydroxyl functionality for excellent crosslink density with isocyanates and melamine resins.
Optimized molecular weight distribution for balanced flow, leveling, and film hardness in baked coatings.
Low volatile organic compound (VOC) content, supporting compliant high-solids coating formulations.
Consistent batch-to-batch reproducibility, ensuring reliable performance in industrial production environments.
Good compatibility with common acrylics, alkyds, and curing agents used in hybrid coating systems.
Automotive OEM and refinish topcoats requiring high gloss and durability.
Industrial maintenance coatings for metal substrates exposed to harsh environments.
Appliance coatings demanding excellent chip resistance and smooth appearance.
General-purpose coil coatings where flexibility and corrosion resistance are critical.
High-performance powder coatings for architectural and furniture applications.
| Chemical Type | Hydroxy-functional polyester resin |
| Product Form | Liquid, solvent-based |
| Appearance | Clear to pale yellow viscous liquid |
| Hydroxyl Value (mg KOH/g) | 120–135 |
| Acid Value (mg KOH/g) | < 5 |
| Viscosity @ 25°C (mPa·s) | 3,000–5,000 |
| Solvent Content (wt %) | Approx. 45–50 (xylene/butyl acetate blend) |
| Primary Applications | Baked industrial coatings, high-solids automotive and appliance finishes |
Q1: What is the primary function of Hypomer PE-9624 in coating formulations?
A: Hypomer PE-9624 is a hydroxy-functional polyester resin designed to serve as a reactive binder and crosslinking co-resin—typically used with amino or polyisocyanate curing agents—to enhance film hardness, flexibility, chemical resistance, and adhesion in thermosetting coatings.
Q2: Is PE-9624 suitable for high-solids or low-VOC coating systems?
A: Yes—its molecular weight and hydroxyl functionality are engineered to support formulating high-solids, low-VOC, and solvent-reduced industrial coatings without compromising flow, leveling, or cure performance.
Q3: How does PE-9624 compare to conventional hydroxyacrylates in terms of weatherability and mechanical properties?
A: As a polyester-based resin, PE-9624 generally offers superior flexibility, impact resistance, and hydrolytic stability compared to many hydroxyacrylates—while maintaining good UV resistance and long-term gloss retention in outdoor applications.
Q4: Can PE-9624 be used in coil coating or automotive refinish applications?
A: It is commonly employed in industrial maintenance, general metal finishing, and pre-treatment primers. While not specifically optimized for high-speed coil lines or OEM automotive topcoats, it has demonstrated compatibility in select refinish basecoat/clearcoat systems where balanced cure speed and film integrity are required.
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