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High thermal stability up to 800 °C, suitable for high-temperature ceramic and enamel applications.
Excellent lightfastness and weather resistance, ensuring long-term color retention under UV exposure.
Chemically inert and non-toxic, compliant with EN 71-3 and RoHS directives for safe industrial use.
Consistent particle size distribution for uniform dispersion and optimal opacity in coating systems.
Low oil absorption (< 25 g/100g), enabling high pigment loading and improved formulation efficiency.
Ceramic glazes and underglaze decorations for tableware and architectural tiles.
High-performance architectural coatings requiring durable red hues in exterior façades.
Industrial powder coatings for metal substrates exposed to harsh environmental conditions.
Plastic coloration for engineering thermoplastics used in automotive interior components.
Fire-resistant intumescent coatings where thermal stability and non-volatility are critical.
| Chemical Type | Iron-based mixed-metal oxide (Fe-Cr-Mn system) |
| Product Form | Fine dry powder |
| Appearance | Brilliant reddish-brown powder with matte finish |
| Primary Applications | Ceramics, architectural coatings, powder coatings, plastics |
| Key Features | Thermal stability, UV resistance, chemical inertness, low heavy metal content |
| Benefits | Color consistency across batches, easy dispersion, minimal impact on substrate properties |
| Density | 4.2–4.5 g/cm³ |
| Particle Size (D50) | 0.8–1.2 μm |
Q1: What is the primary chemical composition of Cathay CATHAYCOAT Red RC11B?
A: Cathay CATHAYCOAT Red RC11B is a high-performance inorganic red pigment based on a stabilized iron oxide–chromium oxide composite system, engineered for thermal and chemical robustness in demanding coating applications.
Q2: Is RC11B suitable for use in high-temperature curing coatings?
A: Yes — RC11B exhibits excellent thermal stability and retains its color integrity during typical industrial baking cycles up to 250°C, making it well-suited for coil coatings, automotive refinish primers, and powder coating systems.
Q3: How does RC11B perform in acidic or alkaline environments?
A: RC11B demonstrates strong resistance to both mild acidic and alkaline conditions due to its fully calcined inorganic matrix, supporting reliable performance in architectural paints, protective marine coatings, and cementitious systems.
Q4: Can RC11B be used in waterborne coating formulations?
A: Yes — RC11B is compatible with common waterborne acrylic, epoxy, and polyurethane dispersions; dispersion stability and color development are optimized using standard anionic or nonionic dispersants and appropriate milling protocols.
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