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Exceptional thermal stability up to 1200 °C in oxidizing atmospheres.
Non-toxic, heavy-metal-free composition compliant with global REACH and RoHS directives.
Highly resistant to UV radiation, weathering, and chemical attack in aggressive environments.
Excellent dispersion stability in high-temperature ceramic glazes and refractory coatings.
Consistent particle size distribution ensuring uniform color development and minimal batch variation.
Ceramic glazes for architectural tiles and sanitaryware requiring long-term color retention at firing temperatures.
Refractory coatings used in kiln furniture, crucibles, and industrial furnace linings.
High-temperature paints for exhaust systems, combustion chambers, and heat-resistant signage.
Colorants in technical ceramics including alumina and zirconia-based components.
Decorative elements in fire-rated building materials and passive fire protection systems.
| Chemical Type | Complex metal oxide (spinel-type structure) |
| Product Form | Fine free-flowing powder |
| Appearance | Reddish-brown granular powder |
| Primary Applications | Ceramic glazes, refractory coatings, high-temperature paints |
| Key Features | Thermal stability, UV resistance, chemical inertness, non-volatility |
| Benefits | Color permanence above 1000 °C, regulatory compliance, low sintering impact |
| Storage Conditions | Keep in dry, cool, well-ventilated area; protect from moisture and contamination |
| Shelf Life | 36 months from date of manufacture under recommended storage |
Q1: What is the primary application field for CATHAYTHERM RA12HR?
A: CATHAYTHERM RA12HR is specifically engineered for high-temperature applications in thermoset and thermoplastic polymers, including engineering plastics used in automotive under-hood components, electrical connectors, and heat-resistant coatings where long-term thermal stability and color retention are critical.
Q2: Is RA12HR suitable for food-contact or medical-grade polymer formulations?
A: While RA12HR is an inorganic pigment with inherently low volatility and high chemical inertness, its suitability for regulated applications depends on full formulation compliance and end-product testing. It is not pre-certified for food contact or medical use; customers must validate compatibility and regulatory conformance within their specific system and jurisdiction.
Q3: How does RA12HR perform under prolonged exposure to UV radiation and elevated temperatures?
A: RA12HR exhibits excellent resistance to both thermal degradation and UV-induced fading due to its fully inorganic crystalline structure. It maintains color integrity and dispersion stability in applications exposed to continuous service temperatures up to approximately 300 °C and extended outdoor weathering conditions.
Q4: What types of polymer systems show optimal dispersion and color development with RA12HR?
A: RA12HR demonstrates strong compatibility and dispersion efficiency in high-performance engineering resins such as polyphenylene sulfide (PPS), polyetherimide (PEI), polyphthalamide (PPA), and cross-linked phenolic matrices. Pre-treatment or masterbatch incorporation is recommended for best results in high-viscosity melt processing.
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E-mail: wangxingqiang@ericwchem.com
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