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High thermal stability suitable for processing temperatures up to 700 °C.
Excellent lightfastness and weather resistance in outdoor applications.
Non-toxic formulation compliant with major global regulatory frameworks including EU REACH and US FDA 21 CFR.
Low oil absorption enabling efficient dispersion in high-solid and low-VOC formulations.
Consistent hue and high chroma with minimal batch-to-batch variation.
Ceramic glazes and frits for tableware and architectural tiles.
High-performance coatings for industrial machinery and automotive under-hood components.
Coloration of inorganic binders in construction materials such as concrete, stucco, and fiber-cement boards.
Specialty glass coloring for solar control and decorative glass products.
Plastics processing requiring long-term thermal stability, including engineering thermoplastics.
| Chemical Type | Mixed metal oxide (Zinc Iron Chromite-based) |
| Product Form | Free-flowing powder |
| Appearance | Yellow to yellow-brown granular powder |
| Primary Applications | Ceramics, glass, high-temperature coatings, construction materials |
| Key Features | Thermal stability, UV resistance, chemical inertness, non-volatile |
| Benefits | No blooming, no migration, excellent dispersion in aqueous and solvent systems |
| Density (g/cm³) | 4.8–5.2 |
| Particle Size (D50, µm) | 1.2–1.8 |
Q1: What is the primary chemical composition of HEUCODUR Yellow 3R?
A: HEUCODUR Yellow 3R is a high-performance inorganic pigment based on a modified lead chromate–molybdate solid solution, engineered for enhanced thermal stability and lightfastness in demanding polymer processing environments.
Q2: Is this pigment suitable for food-contact plastics?
A: HEUCODUR Yellow 3R is not intended for direct food-contact applications. Its use in packaging or containers requires full regulatory assessment by the formulator, including compliance with applicable regional food contact legislation and migration testing protocols.
Q3: How does HEUCODUR Yellow 3R perform under high-temperature processing conditions?
A: This pigment exhibits excellent thermal stability, maintaining color integrity during standard melt-processing of polyolefins, engineering thermoplastics, and PVC up to typical extrusion and injection molding temperatures—without significant discoloration or decomposition.
Q4: Can HEUCODUR Yellow 3R be used in outdoor applications requiring UV resistance?
A: Yes—its inorganic nature and optimized crystal structure provide inherently good UV stability and weather resistance, making it suitable for long-term outdoor applications when properly compounded and stabilized within the polymer matrix.
Q5: What is the typical dosage range for achieving optimal color strength in polypropylene?
A: Dosage depends on formulation requirements and desired shade intensity, but it is typically used at low concentrations—generally ranging from 0.1% to 2% by weight in polypropylene—due to its high tinting strength and dispersion efficiency.
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