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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 (Grade 7–8) performance standards.
Non-toxic and heavy-metal-free formulation compliant with EN 71-3 and RoHS directives.
Superior dispersion stability in aqueous and solvent-based systems without requiring surface treatment.
Consistent hue and high chroma across batch production, supported by strict QC control per ISO 9001.
Ceramic glazes and frits for architectural tiles and tableware.
High-performance coatings for industrial equipment and automotive under-hood components.
Colorants in refractory materials including firebricks and kiln linings.
Pigmentation of inorganic binders such as sodium silicate and phosphate-bonded cements.
Functional coloring in specialty glass and enamel applications.
| Chemical Type | Mixed metal oxide (Zinc Iron Chromite spinel) |
| Product Form | Fine dry powder |
| Appearance | Free-flowing orange-red powder |
| Primary Applications | Ceramics, refractories, high-temp coatings, enamels |
| Key Features | Thermal stability, lightfastness, chemical inertness, non-volatility |
| Benefits | No fading at elevated temperatures; compatible with oxidizing atmospheres |
| Density (g/cm³) | 4.2–4.5 |
| Particle Size (D50, μm) | 1.8–2.2 |
Q1: What is the primary chemical composition of Cathay CATHAYCOAT Orange OS66?
A: Cathay CATHAYCOAT Orange OS66 is a high-performance inorganic pigment based on mixed metal oxides, engineered for thermal and chemical stability. Its exact composition is proprietary, but it contains no heavy metals regulated under major global restrictions (e.g., lead, cadmium, mercury, or hexavalent chromium).
Q2: Is this pigment suitable for high-temperature coating applications, such as coil coatings or powder coatings?
A: Yes — OS66 is specifically formulated for excellent heat stability and retains its orange hue without significant fading or discoloration during typical curing cycles used in coil, powder, and industrial baked enamel systems.
Q3: How does OS66 perform in terms of lightfastness and weather resistance?
A: As an inorganic oxide-based pigment, OS66 offers inherently high lightfastness and UV stability. It demonstrates strong resistance to chalking, fading, and gloss loss in exterior architectural and industrial coatings exposed to prolonged sunlight and moisture.
Q4: Can OS66 be used in waterborne coating systems?
A: Yes — OS66 is compatible with both solvent-based and waterborne industrial coating formulations. Proper dispersion and stabilization techniques are recommended to ensure optimal color development and long-term suspension stability in aqueous media.
Q5: What is the typical dosage range when incorporating OS66 into coating formulations?
A: Dosage depends on the desired opacity, shade intensity, and base formulation, but OS66 is generally effective at low concentrations — typically ranging from 0.1% to 2% by weight in the final coating system.
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