High chroma and clean bright orange shade with excellent hue consistency.
Outstanding thermal stability suitable for high-temperature processing up to 280 °C.
Excellent lightfastness (ISO 105-B02: Grade 7–8) and weather resistance in outdoor applications.
Good dispersibility in both polar and non-polar polymer systems, including polyolefins and engineering plastics.
Compliant with major global regulatory frameworks, including REACH, RoHS, and FDA 21 CFR 178.3297 for plastic food-contact applications.
Polypropylene (PP) and polyethylene (PE) injection-molded consumer goods.
Automotive interior components requiring long-term color stability and low VOC emission.
Food packaging films and rigid containers where regulatory compliance and migration safety are critical.
Technical fibers and spunbond nonwovens for industrial and hygiene applications.
Masterbatch formulations for extrusion and blow molding processes.
| Chemical Type | Condensed Azo Pigment (C.I. Pigment Orange 71) |
| Product Form | Fine free-flowing powder |
| Appearance | Orange-red crystalline powder |
| Primary Applications | Polyolefins, engineering plastics, masterbatches |
| Key Features | High heat stability, excellent dispersion, low dusting |
| Benefits | Consistent batch-to-batch color, reduced filter clogging, efficient pigment utilization |
| Recommended Processing Temperature Range | Up to 280 °C (short-term) |
| Regulatory Status | REACH registered; compliant with EU Plastics Regulation (EU) No 10/2011 and FDA 21 CFR 178.3297 |
Q1: What is the primary chemical class of Novoperm Orange HL 71?
A: Novoperm Orange HL 71 is a high-performance, non-benzidine-based monoazo pigment, developed for excellent thermal stability and lightfastness in demanding polymer applications.
Q2: Is this pigment suitable for food-contact plastics?
A: Novoperm Orange HL 71 is not pre-approved for direct food-contact applications under major global regulatory frameworks. Its use in food-contact polymers requires full formulation-level compliance assessment by the end-user, including migration testing and regulatory review per applicable jurisdiction.
Q3: What are typical dosage levels in polyolefin masterbatches?
A: Dosage depends on required shade strength and opacity, but it is typically used at low concentrations—generally ranging from 0.1% to 2% by weight in polyolefin masterbatches.
Q4: How does HL 71 perform during high-temperature processing, such as injection molding of engineering plastics?
A: This pigment demonstrates good thermal stability up to approximately 280–300 °C, making it suitable for standard polyolefin and many engineering plastic processing conditions—though extended residence times or higher temperatures may require evaluation for potential hue shift or degradation.
Q5: Can Novoperm Orange HL 71 be used in water-based inks or coatings?
A: While primarily designed and optimized for thermoplastic polymers, HL 71 can be formulated into aqueous systems with appropriate dispersants and stabilization—however, performance (e.g., gloss, dispersion stability, and rheology) must be validated case-by-case due to its inherently hydrophobic nature.
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