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High-solids, low-viscosity unsaturated polyester resin for efficient processing and reduced VOC emissions.
Excellent compatibility with standard styrene monomers and common free-radical initiators.
Good mechanical strength and chemical resistance in cured laminates and castings.
Consistent reactivity profile enabling reliable gel time control in ambient and elevated temperature curing.
Optimized for high-gloss surface finish and minimal post-cure shrinkage in decorative and structural applications.
Fiberglass-reinforced plastic (FRP) panels and enclosures for architectural and industrial use.
Marine deck and hull components requiring dimensional stability and moisture resistance.
Transportation interior parts including bus and rail seating shells and trim elements.
Cultured marble and solid surface countertop casting systems.
Industrial grating, tanks, and corrosion-resistant linings.
| Chemical Type | Unsaturated polyester resin |
| Product Form | Liquid |
| Appearance | Clear to pale yellow viscous liquid |
| Primary Applications | FRP laminating, casting, and pultrusion |
| Key Features | High solids content, low styrene demand, good flow characteristics |
| Benefits | Improved productivity, reduced emissions, consistent cure performance |
| Storage Stability | ≥6 months at 20–25 °C in sealed original container |
| Recommended Styrene Content | 30–35 wt% (for optimal processability and properties) |
Q1: What is the primary application area for ROSKYDAL K 58?
A: ROSKYDAL K 58 is a reactive diluent and co-resin specifically designed for unsaturated polyester (UP) systems used in high-performance gel coats, laminating resins, and casting applications—particularly where low viscosity, good air release, and balanced reactivity are required.
Q2: How does ROSKYDAL K 58 differ from standard styrene in UP formulations?
A: Unlike conventional styrene, ROSKYDAL K 58 is a low-volatility, difunctional reactive diluent that contributes to improved crosslink density and reduced styrene emissions. It offers enhanced compatibility with various UP resins and supports better mechanical performance in cured composites without significantly compromising pot life.
Q3: Is ROSKYDAL K 58 suitable for low-VOC or emission-reduced formulations?
A: Yes—ROSKYDAL K 58 is frequently selected to partially replace styrene in VOC-reduction strategies due to its lower vapor pressure and higher molecular weight, helping formulators meet increasingly stringent environmental and occupational exposure requirements without major reformulation efforts.
Q4: What storage conditions are recommended for ROSKYDAL K 58?
A: Store in tightly sealed containers under cool, dry, and well-ventilated conditions, away from direct sunlight, heat sources, and strong oxidizing agents. Prolonged exposure to elevated temperatures or moisture may affect stability and handling properties over time.
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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
