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High chroma yellow shade with excellent lightfastness and weather resistance.
Optimized for compatibility with alkyd, polyester, and acrylic resin systems.
Low viscosity formulation enabling easy dispersion and efficient incorporation into coatings.
Consistent batch-to-batch color reproducibility supported by stringent QC protocols.
Free of heavy metals and compliant with major global regulatory frameworks (e.g., EU REACH).
Industrial maintenance coatings for metal structures and equipment.
Agricultural and construction machinery finishes.
General-purpose protective coatings for steel and aluminum substrates.
Automotive refinish primers and topcoats requiring durable yellow tones.
| Chemical Type | Metal oxide-based organic pigment dispersion |
| Product Form | Liquid color paste |
| Appearance | Homogeneous, viscous yellow paste |
| Primary Applications | Protective coatings, industrial finishes, automotive refinish |
| Key Features | Good dispersibility, thermal stability up to 180°C, non-bleeding |
| Benefits | Reduced grinding time, improved gloss retention, low VOC impact |
| Recommended Carrier | Alkyd or aromatic hydrocarbon solvent systems |
Q1: What types of polymer systems is Colanyl Oxide Yellow R 531 compatible with?
A: This color paste is specifically formulated for use in polyolefins—including polypropylene (PP) and polyethylene (PE)—and demonstrates good compatibility in thermoplastic elastomers (TPEs). It is not recommended for high-temperature engineering plastics such as PEEK or PSU without prior compatibility testing.
Q2: How does this paste perform under thermal processing conditions typical for injection molding or extrusion?
A: Colanyl Oxide Yellow R 531 exhibits excellent thermal stability up to approximately 280 °C for short residence times, making it suitable for standard polyolefin processing. Discoloration may occur if exposed to prolonged temperatures above this threshold or in highly oxidative environments.
Q3: Is this product suitable for applications requiring food contact compliance?
A: Colanyl Oxide Yellow R 531 is designed for industrial and non-food-contact applications. It is not certified for direct food contact use; customers requiring food-safe colorants should consult Clariant’s dedicated food-compliant portfolio and obtain formal regulatory documentation prior to use.
Q4: What is the recommended dosage range for achieving consistent coloration in polypropylene?
A: Typical dosage ranges from 0.1% to 2.0% by weight depending on the desired shade intensity and base polymer opacity. For most standard tints in homopolymer PP, effective dispersion is achieved at concentrations between 0.3% and 1.2%, with thorough melt mixing being essential for uniformity.
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