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High thermal stability up to 800 °C, enabling use in high-temperature processing environments.
Excellent UV resistance and lightfastness, ensuring long-term color retention in outdoor applications.
Low volatility and non-outgassing behavior, suitable for vacuum and cleanroom-sensitive processes.
Chemically inert composition based on mixed-metal oxide technology, providing superior acid/alkali resistance.
Consistent particle size distribution for uniform dispersion and optimal opacity in demanding matrices.
High-performance engineering plastics for automotive under-hood components.
Color-stable coatings for architectural metal façades and solar reflectors.
Heat-resistant ceramic glazes and kiln-fired decorative tiles.
Functional black pigments in electronic encapsulation compounds and EMI shielding composites.
Stable colorants for glass batch formulations requiring minimal iron content.
| Chemical Type | Mixed-metal oxide (Fe–Cr–Mn–Ni spinel) |
| Product Form | Free-flowing dry powder |
| Appearance | Jet-black granular powder |
| Primary Applications | Engineering plastics, high-temp coatings, ceramics, glass |
| Key Features | Thermal stability, UV resistance, chemical inertness, low heavy metals |
| Benefits | Color consistency, process robustness, regulatory compliance (RoHS, REACH) |
| Density (g/cm³) | 4.6–4.9 |
| Ignition Loss (1000 °C, %) | <0.5 |
Q1: What is the primary chemical composition of HEUCODUR Black 955?
A: HEUCODUR Black 955 is a high-performance inorganic black pigment based on a spinel-type mixed metal oxide, engineered for exceptional thermal stability and chemical resistance. Its composition is proprietary to Heubach but falls within the class of complex iron-manganese-cobalt oxides designed for demanding industrial applications.
Q2: Is this pigment suitable for use in food-contact plastics?
A: Yes, HEUCODUR Black 955 is formulated and tested for compliance with global food-contact regulations applicable to inorganic pigments in polyolefins and other thermoplastics. It is intended for indirect food-contact applications where regulatory assessment confirms suitability for the final article’s intended use conditions.
Q3: How does HEUCODUR Black 955 perform under high-temperature processing?
A: This pigment exhibits excellent thermal stability, retaining its black hue and dispersion integrity during standard polymer processing up to 300 °C. It is especially suited for applications involving extended residence times or high-shear compounding, such as in masterbatch production or engineering thermoplastics.
Q4: What types of polymers is HEUCODUR Black 955 typically used in?
A: It is widely compatible with polyolefins (PP, PE), polyesters (PET, PBT), polycarbonate, and engineering thermoplastics. Its surface treatment enables good dispersibility in both non-polar and moderately polar matrices, making it suitable for demanding coloration of technical parts and functional components.
Q5: What is the typical dosage range when using this pigment in polymer systems?
A: Dosage depends on the desired shade depth, polymer type, and processing method, but it is generally used at low concentrations—typically ranging from 0.1% to 2% by weight in final compounds. Optimal loading should be determined through application-specific trials to balance color strength, dispersion quality, and mechanical performance.
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