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High chroma and excellent blue shade consistency for precise color matching.
Outstanding thermal stability up to 280 °C, suitable for demanding processing conditions.
Good dispersibility in both polar and non-polar polymer systems including polyolefins and engineering plastics.
Excellent lightfastness and weather resistance (ISO 105-B02, Grade 7–8).
Low migration behavior, ensuring color integrity in food-contact and medical-grade applications.
Polypropylene (PP) and polyethylene (PE) injection-molded parts.
Automotive interior components requiring high UV and heat resistance.
Household appliances with stringent regulatory and aesthetic requirements.
Technical films and blow-molded containers for packaging.
Engineering plastics such as ABS, PC/ABS blends, and polyamides.
| Chemical Type | High-performance perylene pigment |
| Product Form | Free-flowing powder |
| Appearance | Deep blue-violet free-flowing powder |
| Primary Applications | Polyolefins, engineering plastics, masterbatches |
| Key Features | Thermal stability, low migration, high tinctorial strength |
| Regulatory Compliance | EU REACH registered; compliant with FDA 21 CFR §178.3297 for polymers |
| Particle Size (D50) | Approx. 0.08–0.12 µm (by laser diffraction) |
| Heat Resistance | Up to 280 °C (short-term) |
Q1: What is the primary chemical class of Hostaperm Blue A4R?
A: Hostaperm Blue A4R is a high-performance perylene-based organic pigment, belonging to the perylene diimide family, known for exceptional lightfastness, thermal stability, and resistance to migration in demanding polymer applications.
Q2: Is Hostaperm Blue A4R suitable for food-contact plastics?
A: Hostaperm Blue A4R is not pre-approved for direct food-contact applications under major global regulatory frameworks. Its use in food-contact plastics requires full formulation-level compliance assessment by the end-user, including extraction testing and regulatory review per applicable jurisdiction.
Q3: Which polymers show optimal dispersion and color development with this pigment?
A: Hostaperm Blue A4R delivers excellent dispersion and vivid blue shades in engineering thermoplastics such as polyamide (PA6, PA66), polybutylene terephthalate (PBT), and polyethylene terephthalate (PET), especially under high-temperature processing conditions.
Q4: How does Hostaperm Blue A4R perform under UV exposure and weathering?
A: As a perylene diimide pigment, Hostaperm Blue A4R exhibits outstanding UV stability and weather resistance—significantly outperforming conventional phthalocyanine blues—making it well-suited for outdoor applications where long-term color retention is critical.
Q5: What is the typical dosage range in polymer masterbatches?
A: Dosage depends on the target shade strength and polymer matrix, but Hostaperm Blue A4R is typically used at low concentrations—generally ranging from 0.1% to 2% by weight in masterbatch formulations—to achieve strong blue hues with minimal impact on mechanical properties.
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