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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.
Strong tinting strength and opacity, enabling efficient pigment loading in demanding formulations.
Chemically inert in alkaline and acidic environments, ensuring compatibility with diverse binder systems.
Ceramic glazes and underglaze decorations for tableware and architectural tiles.
High-performance enamel coatings for household appliances and industrial metal substrates.
Colorants in refractory materials including kiln furniture and furnace linings.
Pigmentation of low-VOC architectural coatings requiring durable red hues.
Functional coloring agent in specialty glass and frit compositions.
| Chemical Type | Complex mixed-metal oxide (Fe–Cr–Al spinel-based) |
| Product Form | Free-flowing fine powder |
| Appearance | Uniform brick-red powder with matte finish |
| Primary Applications | Ceramics, enamels, refractories, architectural coatings |
| Key Features | Thermal stability, chemical inertness, non-toxicity, UV resistance |
| Particle Size (D50) | 1.2–1.8 µm |
| Bulk Density | 2.4–2.7 g/cm³ |
| VOC Content | Non-volatile (0% VOC) |
Q1: What is the primary chemical composition of Cathay CATHAYCOAT Red RA11?
A: Cathay CATHAYCOAT Red RA11 is an iron oxide–based inorganic pigment, formulated with a stabilized hematite (α-Fe₂O₃) crystalline structure. Its composition may include minor, controlled amounts of dopants or surface treatments to enhance dispersion and thermal stability—consistent with high-performance inorganic red pigments for demanding industrial applications.
Q2: Is this pigment suitable for high-temperature coating systems such as coil coatings or powder coatings?
A: Yes, Cathay CATHAYCOAT Red RA11 exhibits excellent thermal stability and is specifically engineered for use in high-bake applications, including coil coatings (typically cured at 220–260°C) and thermosetting powder coatings. It maintains color integrity and shows minimal degradation under prolonged elevated temperatures.
Q3: How does RA11 compare to organic red pigments in terms of weather resistance and UV stability?
A: As an inorganic pigment, RA11 offers significantly superior long-term weather resistance and UV stability compared to most organic reds. It demonstrates excellent resistance to chalking, fading, and gloss loss in exterior architectural and industrial coatings—even under extended exposure to sunlight, humidity, and temperature cycling.
Q4: Can RA11 be used in waterborne coating systems without compromising dispersion or color strength?
A: Yes—RA11 is surface-treated to ensure good compatibility and stable dispersion in both solvent-based and waterborne systems. With appropriate dispersing agents and milling protocols, it delivers consistent color strength, low viscosity impact, and minimal settling in aqueous acrylic, epoxy, and polyurethane dispersions.
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