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High thermal stability suitable for demanding polymer processing up to 300 °C.
Excellent lightfastness and weather resistance in outdoor applications.
Good migration resistance in PVC, polyolefins, and engineering plastics.
Strong tinting strength with clean, bright yellow hue (CIE L*a*b* approx. L* 90, a* −5, b* 85).
Low volatile organic compound (VOC) content, compliant with stringent regulatory requirements.
Coloration of rigid and flexible PVC profiles, cables, and flooring.
Pigmentation of polypropylene (PP) and polyethylene (PE) injection-molded parts.
Automotive interior plastics requiring long-term color stability.
Masterbatch formulations for packaging films and non-food contact containers.
| Chemical Type | Disazo condensation pigment |
| Product Form | Fine powder |
| Appearance | Yellow to orange-yellow free-flowing powder |
| Primary Applications | PVC, polyolefins, engineering plastics, masterbatches |
| Key Features | High heat stability, excellent dispersibility, low dusting |
| Benefits | Consistent batch-to-batch color, minimal filter clogging, high process efficiency |
| Regulatory Compliance | EU REACH registered; compliant with FDA 21 CFR §178.3297 (for indirect food contact) |
Q1: What are the primary application areas for Hostaperm Yellow H4G and C pigments?
A: These high-performance organic pigments are widely used in demanding industrial applications including automotive coatings, coil coatings, and high-gloss architectural paints where excellent lightfastness, thermal stability, and color strength are required. They are also employed in selected engineering plastics and specialty inks.
Q2: How does Hostaperm Yellow H4G differ from Hostaperm Yellow C... in terms of performance?
A: Hostaperm Yellow H4G offers enhanced heat stability and improved resistance to migration in polymer systems, making it particularly suitable for high-temperature processing such as injection molding. The C... variant typically provides slightly higher color strength and better dispersibility in certain solvent-based coating systems, though both share similar chemical classification and core performance attributes.
Q3: What is the recommended dispersion method for optimal color development?
A: For best results, use high-shear dispersion equipment—such as bead mills or high-speed dissolvers—with appropriate wetting agents compatible with the target medium. Pre-wetting with polar solvents or dispersants helps achieve uniform particle distribution and maximizes tinting strength and transparency.
Q4: Are these pigments suitable for food-contact or pharmaceutical applications?
A: Hostaperm Yellow H4G and C... are not approved for direct food-contact or pharmaceutical use. They are intended for industrial and decorative applications where regulatory compliance for consumer-facing products is not required. Always consult Clariant’s latest regulatory documentation and safety data sheets before use in regulated environments.
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E-mail: wangxingqiang@ericwchem.com
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