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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.
Low solubility in water and organic solvents, ensuring formulation stability in aqueous and solvent-based systems.
Non-toxic and heavy-metal-free (compliant with EU REACH and RoHS directives).
Fine particle size distribution for uniform dispersion and optimal hiding power in coatings and plastics.
Ceramic glazes and frits for tableware, sanitaryware, and architectural tiles.
High-temperature enamels for domestic appliances and industrial metal substrates.
Colorants for engineering plastics requiring heat resistance (e.g., polyamide, PBT).
Pigment dispersions in architectural and industrial coatings exposed to outdoor conditions.
Functional colorants in flame-retardant composites and fire-resistant building materials.
| Chemical Type | Complex iron-chromium oxide spinel |
| Product Form | Free-flowing dry powder |
| Appearance | Uniform brick-red granular powder |
| Primary Applications | Ceramics, high-temperature enamels, engineering plastics, durable coatings |
| Key Features | Heat stable, UV resistant, chemically inert, non-volatile |
| Benefits | Color consistency after firing, low migration risk, minimal impact on polymer mechanical properties |
| Storage Conditions | Store in cool, dry place; protect from moisture and direct sunlight |
| Regulatory Compliance | REACH registered, RoHS compliant, non-hazardous per GHS classification |
Q1: What is the primary chemical composition of Cathay CATHAYCOAT Red RC18C?
A: Cathay CATHAYCOAT Red RC18C 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 RC18C suitable for use in high-temperature curing coatings?
A: Yes — RC18C exhibits excellent thermal stability and retains its color integrity during standard industrial baking cycles, including those up to 250 °C for short durations, making it well-suited for coil coatings, automotive refinishes, and powder coating systems.
Q3: How does RC18C perform in UV-exposed exterior applications?
A: RC18C demonstrates strong resistance to UV-induced fading and chalking due to its fully inorganic crystalline structure and surface stabilization, supporting long-term color retention in architectural and industrial maintenance coatings exposed to sunlight and weathering.
Q4: Can RC18C be used in water-based coating systems?
A: Yes — RC18C is compatible with both solvent-borne and water-based formulations, including acrylic, epoxy, and polyurethane dispersions, provided appropriate dispersants and stabilization protocols are applied during mill-base preparation.
Q5: What is the typical dosage range for optimal color strength and dispersion efficiency?
A: Dosage depends on formulation requirements and desired opacity, but RC18C is typically used at low concentrations — generally ranging from 0.1% to 2% by weight in the final coating — owing to its high tinting strength and efficient particle dispersion characteristics.
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