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High-solids, low-viscosity alkyd-modified polyester resin for excellent spray and flow performance.
Designed for outstanding gloss retention and long-term color stability in exterior applications.
Provides excellent compatibility with common amino crosslinkers (e.g., melamine-formaldehyde) and solvent-based systems.
Delivers balanced hardness development and flexibility for durable coil and general metal coatings.
Complies with major global VOC regulations for industrial maintenance and coil coating formulations.
Coil coatings for pre-painted metal used in building façades and roofing.
General-purpose metal coatings for appliances and HVAC components.
Industrial maintenance coatings for structural steel and agricultural equipment.
Can coating primers and topcoats requiring weather resistance and chemical resistance.
| Chemical Type | Alkyd-modified saturated polyester resin |
| Product Form | Liquid |
| Appearance | Clear to pale yellow viscous liquid |
| Primary Applications | Coil coatings, metal can coatings, general industrial metal finishes |
| Key Features | High solids, low VOC, excellent gloss & weather resistance |
| Recommended Crosslinker | Melamine-formaldehyde resins (high- or medium-amino) |
| Solvent Compatibility | Compatible with aromatic hydrocarbons, esters, and ketones |
| Storage Stability | Stable for ≥12 months at 20–25 °C in sealed containers |
Q1: What is the primary function of ROSKYDAL K 30 in polyester-based coating systems?
A: ROSKYDAL K 30 is a reactive polyester resin designed to act as a crosslinking agent—specifically, a melamine-free alternative—that enhances hardness, chemical resistance, and film integrity in thermosetting polyester coatings, particularly for coil and general industrial applications.
Q2: Is ROSKYDAL K 30 compatible with standard polyester resins used in coil coating formulations?
A: Yes, ROSKYDAL K 30 is formulated for broad compatibility with conventional carboxyl-terminated saturated polyesters and is commonly integrated into high-solids, low-VOC coil coating systems without requiring major reformulation.
Q3: How does ROSKYDAL K 30 contribute to curing performance?
A: It enables efficient thermal crosslinking at typical coil coating cure temperatures (e.g., 230–260 °C), supporting rapid throughput while delivering balanced flexibility and surface hardness—without relying on formaldehyde-releasing melamine resins.
Q4: Can ROSKYDAL K 30 be used in powder coating systems?
A: While primarily developed for liquid coil and industrial coatings, ROSKYDAL K 30 has demonstrated feasibility in certain hybrid and polyester-based powder formulations—however, compatibility and performance must be validated experimentally due to differences in melt rheology and cure kinetics.
Q5: What are key handling and storage recommendations for ROSKYDAL K 30?
A: Store in tightly sealed containers under cool, dry conditions away from direct sunlight and excessive heat. Avoid prolonged exposure to moisture or strong oxidizing agents. As with all reactive resins, good industrial hygiene practices—including appropriate ventilation and personal protective equipment—are recommended during handling.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
