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High near-infrared (NIR) reflectivity for superior solar heat rejection in coatings.
Excellent thermal stability up to 350°C, enabling compatibility with high-bake industrial processes.
Neutral gray-black hue with minimal color shift under UV exposure and weathering.
Low oil absorption for improved dispersion stability and enhanced pigment loading efficiency.
Non-toxic formulation compliant with REACH and RoHS directives for sustainable manufacturing.
Energy-efficient architectural coatings for roofs and façades.
Automotive OEM and refinish coatings requiring heat management and aesthetic consistency.
Industrial maintenance coatings for metal structures in hot-climate regions.
Plastic colorants for outdoor applications including building profiles and automotive trim.
Specialty inks for heat-sensitive substrates requiring NIR-reflective functionality.
| Chemical Type | Mixed-metal oxide (Fe–Cr–Ni spinel-based) |
| Product Form | Fine dry powder |
| Appearance | Matte gray-black granular solid |
| Primary Applications | Heat-reflective coatings, plastics, and inks |
| Key Features | NIR-reflective, thermally stable, UV-resistant |
| Particle Size (D50) | 0.8–1.2 µm |
| Specific Gravity | 4.9–5.2 g/cm³ |
| pH (10% aqueous slurry) | 6.5–7.5 |
Q1: What is the primary function of CATHAYTHERM GA78 Pigment in polymer systems?
A: CATHAYTHERM GA78 is a high-performance thermochromic pigment designed to provide reversible color change in response to temperature variations. It is commonly incorporated into plastics, coatings, and inks to enable visual thermal indication or dynamic aesthetic effects.
Q2: Is CATHAYTHERM GA78 compatible with common thermoplastic resins such as PP, PE, and ABS?
A: Yes — CATHAYTHERM GA78 is formulated for compatibility with a broad range of thermoplastics including polypropylene (PP), polyethylene (PE), acrylonitrile butadiene styrene (ABS), and certain engineering polymers. Optimal dispersion typically requires standard melt-compounding techniques and may benefit from carrier-resin pre-mixing.
Q3: How should CATHAYTHERM GA78 be processed to preserve its thermochromic performance?
A: To maintain integrity, processing temperatures should remain below the pigment’s activation threshold and avoid prolonged exposure above 200 °C. Short residence times during extrusion or injection molding are recommended, and direct contact with strong oxidizing agents or highly acidic/basic environments should be avoided.
Q4: What is the typical dosage range for achieving effective thermochromic response in plastic parts?
A: Dosage depends on substrate thickness, desired color intensity, and transition visibility requirements. In most thermoplastic applications, effective loading generally ranges from 0.1% to 2% by weight relative to the base polymer, with optimization guided by small-scale trials.
Q5: Can CATHAYTHERM GA78 be used in food-contact or medical-grade applications?
A: CATHAYTHERM GA78 is not pre-qualified for direct food-contact or implantable medical use. Its suitability for regulated applications must be evaluated case-by-case, considering final formulation, processing conditions, and compliance with applicable regional regulatory frameworks.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
