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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 acid/alkali resistant, maintaining integrity in aggressive chemical environments.
Low heavy metal content, compliant with RoHS and EN 71-3 safety standards for consumer-facing products.
Consistent particle size distribution for uniform dispersion and optimal opacity in coating systems.
Ceramic glazes and underglaze decorations for tableware and architectural tiles.
High-performance industrial coatings for automotive exhaust components and heat-resistant appliances.
Porcelain enamel on steel substrates for cookware, water heaters, and signage.
Specialty inks for glass and metal decoration requiring firing stability.
Colorants in refractory materials and fireproofing composites.
| Chemical Type | Mixed-metal oxide (Fe–Cr–Ni spinel-based) |
| Product Form | Free-flowing fine powder |
| Appearance | Brilliant reddish-brown granular powder |
| Primary Applications | Ceramics, porcelain enamel, high-temp coatings, refractories |
| Key Features | Thermal stability, chemical inertness, low solubility, non-volatile |
| Benefits | Color consistency after firing, minimal batch variation, easy dispersion |
| Density (g/cm³) | 4.2–4.5 |
| Particle Size (D50, μm) | 1.8–2.4 |
Q1: What is the primary chemical composition of CATHAYCOAT Red RC145?
A: CATHAYCOAT Red RC145 is a high-performance inorganic red pigment based on iron oxide–modified complex metal oxides, engineered for enhanced thermal stability and UV resistance. Its exact composition is proprietary, but it contains no heavy metals such as lead, cadmium, or mercury, and complies with major global regulatory expectations for industrial pigments.
Q2: Is RC145 suitable for high-temperature coating applications, such as coil coatings or powder coatings?
A: Yes — RC145 is specifically formulated for excellent thermal stability and retains its color integrity under prolonged exposure to temperatures up to 400 °C, making it well-suited for demanding applications including coil coatings, automotive refinish primers, and thermosetting powder coatings.
Q3: How does RC145 perform in weathering and lightfastness tests compared to conventional iron oxide reds?
A: RC145 demonstrates significantly improved lightfastness and chalk resistance versus standard hematite-based reds due to its optimized crystal structure and surface treatment. It shows strong retention of color strength and hue after extended QUV and xenon-arc exposure, especially in acrylic and polyester-based systems.
Q4: Can RC145 be used in waterborne industrial coatings without dispersion challenges?
A: Yes — RC145 is supplied with a surface treatment compatible with both solvent-borne and waterborne systems. With appropriate wetting and dispersing agents, it achieves stable, low-viscosity dispersions in acrylic, epoxy, and polyurethane emulsions, minimizing settling and maintaining gloss uniformity.
Q5: What is the typical dosage range for RC145 in industrial coating formulations?
A: Dosage depends on the required opacity, color strength, and base resin system, but RC145 is generally effective at low concentrations — typically ranging from 0.1% to 2% by weight in finished coatings — thanks to its high tinting strength and efficient particle size distribution.
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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
