High chroma and excellent brightness for vivid, clean yellow shades.
Good thermal stability suitable for processing temperatures up to 180 °C.
Excellent lightfastness (Grade 6–7 per ISO 105-B02) in demanding applications.
Good dispersibility in both polar and non-polar media, including PVC and polyolefins.
Compliant with major global regulatory frameworks including REACH and RoHS.
Coloration of rigid and flexible PVC for profiles, flooring, and cables.
Masterbatch formulation for polypropylene (PP) and polyethylene (PE) packaging films.
Industrial coatings requiring high visibility and weather resistance.
Printing inks for packaging and label applications on flexible substrates.
Plastic compounding for automotive interior components and consumer goods.
| Chemical Type | Azo pigment (Monoazo, Hansa Yellow derivative) |
| Product Form | Free-flowing powder |
| Appearance | Bright yellow to greenish-yellow powder |
| Primary Applications | PVC, polyolefins, industrial coatings, printing inks |
| Key Features | High tinctorial strength, good heat stability, low migration |
| Benefits | Consistent batch-to-batch color, ease of dispersion, regulatory compliance |
| Typical Particle Size (D50) | 0.08–0.12 µm |
| Volatile Matter (105 °C, 2 h) | ≤ 1.0 wt% |
Q1: What are the primary application areas for Hansa Brilliant Yellow 4GX pigment?
A: Hansa Brilliant Yellow 4GX is widely used in industrial coatings, printing inks (especially offset and gravure), and plastics applications where high chroma, good lightfastness, and excellent dispersibility are required. It is not recommended for food-contact or pharmaceutical applications unless specifically validated for compliance.
Q2: How does this pigment perform in terms of heat stability and weather resistance?
A: Hansa Brilliant Yellow 4GX offers moderate heat stability suitable for standard processing conditions in thermoplastics and coatings, but prolonged exposure above 180°C may lead to fading or discoloration. Its weather resistance is fair to good in protected applications; however, extended outdoor exposure without UV stabilizers may result in gradual hue shift and reduced intensity.
Q3: What dispersion methods are recommended for optimal performance?
A: For best results, use high-shear dispersion equipment such as bead mills or three-roll mills. Pre-wetting with compatible solvents or resins improves deagglomeration. The pigment responds well to common organic dispersants and surfactants used in solvent-based and water-based systems, though formulation-specific optimization is advised.
Q4: Is Hansa Brilliant Yellow 4GX suitable for use in aqueous systems?
A: Yes — it can be formulated into water-based inks and coatings when properly dispersed using appropriate polymeric or ionic dispersants. Performance depends on pH stability, ionic strength, and the choice of stabilizing agents; compatibility testing under end-use conditions is strongly recommended.
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