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High reactivity with melamine-formaldehyde crosslinkers for rapid cure at low baking temperatures.
Excellent flow and leveling properties, enabling smooth, high-gloss finishes in coil and appliance coatings.
Superior hydrolytic stability and resistance to yellowing under UV exposure.
Low volatile organic compound (VOC) content, supporting compliance with stringent environmental regulations.
Consistent batch-to-batch reproducibility, ensuring reliable performance in high-volume industrial coating lines.
Coil coatings for pre-painted metal used in building panels and roofing systems.
Appliance coatings for refrigerators, washing machines, and ovens.
General industrial metal coatings requiring durability and aesthetic quality.
Can coatings for food and beverage containers requiring FDA-compliant formulations.
Automotive trim and non-critical exterior components requiring weather-resistant finishes.
| Chemical Type | Saturated polyester resin |
| Product Form | Liquid |
| Appearance | Clear to pale yellow viscous liquid |
| Primary Applications | Thermosetting coil, appliance, and general industrial coatings |
| Key Features | Low-bake reactivity, high gloss retention, excellent compatibility with melamine resins |
| Benefits | Energy-efficient curing, superior film hardness, enhanced chemical resistance |
| Storage Stability | Stable at 20–25°C for ≥12 months in sealed containers |
| VOC Content | ≤80 g/L (as supplied) |
Q1: What is the primary function of ROSKYDAL 300/1 in coating formulations?
A: ROSKYDAL 300/1 is a reactive polyester resin designed to act as a crosslinker or co-resin in thermosetting systems, particularly in high-performance powder and liquid coatings. It contributes to improved film hardness, flexibility, and chemical resistance through ester-based network formation during cure.
Q2: Is ROSKYDAL 300/1 compatible with common curing agents like TGIC or β-hydroxyalkyl amides (HAA)?
A: Yes, ROSKYDAL 300/1 is formulated for compatibility with standard polyester-curing agents, including TGIC and HAA-type accelerators. Its reactivity profile supports balanced gel time and full cure development under typical industrial baking conditions.
Q3: How does ROSKYDAL 300/1 differ from conventional carboxyl-functional polyesters used in powder coatings?
A: ROSKYDAL 300/1 features a tailored molecular weight distribution and acid value optimized for enhanced flow and leveling while maintaining robust crosslink density. It is especially suited for applications requiring superior exterior durability and gloss retention without sacrificing mechanical toughness.
Q4: Can ROSKYDAL 300/1 be used in food-contact compliant coating systems?
A: ROSKYDAL 300/1 is suitable for use in coating formulations intended for indirect food contact, provided the final cured system complies with applicable regulatory requirements and is validated by the full formulation developer. Allnex recommends thorough testing of the complete coating system for migration and compliance.
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E-mail: wangxingqiang@ericwchem.com
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