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Exceptional thermal stability up to 1200°C in oxidizing atmospheres.
Non-toxic, heavy-metal-free composition compliant with global regulatory standards (RoHS, REACH).
High color consistency and batch-to-batch reproducibility for critical industrial applications.
Excellent chemical inertness against acids, alkalis, and solvents under elevated temperature conditions.
Optimized particle size distribution for uniform dispersion in high-performance ceramic and refractory matrices.
Ceramic glazes and decorations for architectural tiles and tableware.
High-temperature coatings for furnace linings and industrial kiln components.
Pigmentation of refractory bricks and castables used in metallurgical and glass manufacturing.
Colorants in technical ceramics requiring long-term stability under thermal cycling.
Functional pigments in heat-resistant signage and safety-critical fire-rated building materials.
| Chemical Type | Mixed-metal oxide (spinel-based) |
| Product Form | Fine dry powder |
| Appearance | Free-flowing reddish-brown granular powder |
| Primary Applications | Ceramics, refractories, high-temperature coatings |
| Key Features | Thermal stability, non-volatility, UV resistance |
| Benefits | Color retention at >1000°C, low sintering reactivity, no blooming or migration |
| Density (g/cm³) | 4.2–4.5 (typical) |
| Particle Size (D50, µm) | 1.8–2.5 |
Q1: What is the primary application field for CATHAYTHERM RA15HR?
A: CATHAYTHERM RA15HR is specifically engineered for high-temperature applications in thermoset and thermoplastic polymer systems, including engineering plastics, powder coatings, and heat-resistant masterbatches where long-term thermal stability and color retention are critical.
Q2: How does RA15HR perform under prolonged thermal exposure?
A: This pigment exhibits excellent thermal stability, maintaining consistent hue and opacity during processing and end-use at temperatures up to approximately 350°C, with minimal color shift or decomposition in inert or mildly oxidative atmospheres.
Q3: Is RA15HR compatible with common engineering resins such as PEEK, PEI, and polyimides?
A: Yes — RA15HR demonstrates good compatibility and dispersion stability in high-performance thermoplastics and thermosets, including polyetheretherketone (PEEK), polyetherimide (PEI), and aromatic polyimides, without adversely affecting mechanical or electrical properties when properly compounded.
Q4: What is the typical dosage range for achieving optimal color strength and thermal performance?
A: Dosage depends on formulation requirements and desired opacity, but it is typically used at low concentrations — generally ranging from 0.1% to 2% by weight — with efficient tinting strength and minimal impact on melt viscosity or thermal degradation onset.
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E-mail: wangxingqiang@ericwchem.com
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