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High thermal stability up to 800 °C, suitable for high-temperature ceramic and enamel applications.
Excellent lightfastness and weather resistance, maintaining color integrity under prolonged UV exposure.
Non-toxic composition compliant with global regulatory standards including EN 71-3 and RoHS.
Superior chemical inertness—resistant to acids, alkalis, and solvents commonly used in industrial coatings.
Consistent particle size distribution ensuring uniform dispersion and optimal opacity in pigment systems.
Ceramic glazes and frits for tableware and architectural tiles.
High-performance architectural and industrial coatings requiring durable red coloration.
Plastic colorants for outdoor applications, including polyolefins and engineering thermoplastics.
Colored glass formulations for decorative and functional glass products.
Fire-resistant intumescent coatings where thermal stability and non-volatility are critical.
| Chemical Type | Complex metal oxide (Iron-Manganese-Cobalt spinel) |
| Product Form | Free-flowing fine powder |
| Appearance | Brilliant reddish-brown granular powder |
| Primary Applications | Ceramics, coatings, plastics, glass |
| Key Features | Thermal stability, UV resistance, low heavy metal content |
| Benefits | Color consistency, batch-to-batch reproducibility, easy dispersion |
| Density | 4.8–5.1 g/cm³ |
| Particle Size (D50) | 0.8–1.2 μm |
Q1: What is the primary chemical composition of Cathay CATHAYCOAT Red RS11B?
A: Cathay CATHAYCOAT Red RS11B is a high-performance inorganic red pigment based on a stabilized iron oxide–chromium oxide composite system, engineered for enhanced thermal stability and chemical resistance.
Q2: Is this pigment suitable for high-temperature coating applications such as coil coatings or powder coatings?
A: Yes — RS11B is specifically formulated for demanding high-temperature curing processes, including coil coating lines and thermoset powder coatings, where it maintains excellent color integrity and dispersion stability up to 250°C.
Q3: How does RS11B compare to organic red pigments in terms of weathering resistance?
A: As an inorganic pigment, RS11B offers significantly superior UV stability, chalking resistance, and long-term color retention compared to most organic reds—making it well-suited for exterior architectural and industrial maintenance coatings.
Q4: Can RS11B be used in water-based systems without compromising dispersion or tinting strength?
A: Yes — RS11B is surface-treated to ensure good wettability and stable dispersion in both water-based acrylic and polyurethane dispersions, delivering consistent tinting strength and minimal settling during storage.
Q5: What is the recommended dosage range for optimal performance in solvent-borne industrial coatings?
A: Dosage depends on formulation requirements, but RS11B is typically used at low concentrations — generally ranging from 0.1% to 2% by weight — to achieve full opacity and chromatic intensity while maintaining film integrity.
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