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High thermal stability up to 800°C, ensuring color retention during high-temperature processing.
Excellent lightfastness and weather resistance, meeting ISO 105-B02 and ASTM D4303 standards.
Low soluble salt content (< 0.1%), minimizing corrosion risk in metal-rich systems.
Optimized particle size distribution for enhanced dispersion and gloss in coating matrices.
Lead-free and RoHS-compliant formulation, supporting sustainable manufacturing requirements.
Ceramic glazes and frits for architectural tiles and tableware.
High-performance industrial coatings for automotive under-hood components.
Fire-resistant intumescent paints and passive fire protection systems.
Refractory linings in kilns, furnaces, and metallurgical equipment.
Colored concrete and precast architectural elements exposed to UV and moisture.
| Chemical Type | Iron-based complex inorganic colored pigment (ICP) |
| Product Form | Free-flowing dry powder |
| Appearance | Uniform brick-red granular powder |
| Primary Applications | Ceramics, high-temp coatings, refractories, architectural concrete |
| Key Features | Thermal stability, UV resistance, chemical inertness, low solubility |
| Benefits | Color consistency, long-term durability, regulatory compliance (RoHS, REACH) |
| Density (g/cm³) | 4.2–4.5 |
| pH (10% aqueous slurry) | 6.5–7.5 |
Q1: What is the primary chemical composition of Cathay CATHAYCOAT Red RA15B?
A: Cathay CATHAYCOAT Red RA15B is an iron oxide–based inorganic pigment, formulated to deliver high chroma red coloration with excellent thermal and chemical stability. Its composition is optimized for performance in demanding coating systems without organic dye components.
Q2: Is this pigment suitable for use in industrial coatings exposed to UV light and outdoor weathering?
A: Yes — RA15B exhibits strong resistance to UV degradation and atmospheric exposure, making it well-suited for exterior architectural coatings, metal finishes, and protective industrial coatings where long-term color retention is critical.
Q3: How does RA15B perform in high-temperature curing processes?
A: This pigment maintains its color integrity and structural stability at elevated temperatures commonly encountered in coil coating, powder coating, and ceramic glaze applications, typically up to 350°C for short-duration cycles.
Q4: Can RA15B be used in waterborne and solvent-based systems alike?
A: Yes — RA15B is engineered for broad compatibility across both waterborne acrylics, polyurethanes, and epoxy dispersions, as well as conventional solvent-borne alkyd and polyester systems, with appropriate dispersion protocols.
Q5: What is the typical dosage range when incorporating RA15B into coating formulations?
A: Dosage depends on formulation requirements and desired opacity or intensity, but RA15B is generally effective at low concentrations — typically ranging from 0.1% to 2% by weight of the total formulation — and may be adjusted based on substrate, film thickness, and application method.
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