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High thermal stability up to 800 °C, suitable for high-temperature ceramic and enamel applications.
Excellent lightfastness and UV resistance, ensuring long-term color retention in outdoor exposure.
Chemically inert with superior acid and alkali resistance, enhancing durability in aggressive environments.
Non-toxic and heavy-metal-free formulation compliant with global environmental regulations including RoHS and REACH.
Fine particle size distribution enabling smooth dispersion and uniform color development in demanding matrices.
Ceramic glazes and underglaze decorations for tableware and architectural tiles.
High-performance architectural and industrial coatings requiring weather resistance.
Coloring agents in vitreous enamels for appliances and metal substrates.
Pigmentation of refractory materials and fireproofing composites.
Specialty plastics where thermal processing stability and regulatory compliance are critical.
| Chemical Type | Inorganic mixed-metal oxide (Fe–Cr–Al spinel-based) |
| Product Form | Free-flowing fine powder |
| Appearance | Brilliant red-brown powder |
| Primary Applications | Ceramics, enamels, high-temp coatings, refractories |
| Key Features | Thermal stability, lightfastness, chemical inertness, non-toxicity |
| Benefits | Consistent batch-to-batch color, low dust generation, easy dispersion |
| pH (5% aqueous slurry) | 6.5 – 7.5 |
| Volatile Matter (105 °C, 2 hrs) | ≤ 0.5 wt% |
Q1: What is the primary chemical composition of Cathay CATHAYCOAT Red RS12B?
A: Cathay CATHAYCOAT Red RS12B 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 this pigment suitable for high-temperature curing processes, such as coil coating or powder coating?
A: Yes — RS12B is specifically formulated to retain color integrity and dispersion stability under elevated processing temperatures, making it well-suited for industrial curing cycles commonly used in coil, powder, and ceramic-based coatings.
Q3: How does RS12B compare to organic red pigments in terms of weather resistance and UV stability?
A: As an inorganic pigment, RS12B offers significantly superior resistance to UV degradation, chalking, and long-term color shift compared to most organic reds — especially in exterior architectural and industrial maintenance coatings exposed to harsh environmental conditions.
Q4: What types of binder systems is RS12B compatible with?
A: RS12B demonstrates broad compatibility with common industrial resin systems including acrylics, polyesters, epoxies, alkyds, and silicone-modified binders — both in solvent-borne and water-borne formulations.
Q5: What is the typical dosage range when using RS12B in protective coatings?
A: Dosage depends on formulation requirements and desired opacity, but RS12B is generally used at low concentrations — typically ranging from 0.1% to 2% by weight — due to its strong tinting strength and high hiding power.
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