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High thermal stability suitable for processing temperatures up to 280 °C.
Excellent lightfastness and weather resistance in demanding outdoor applications.
Good dispersibility in both polar and non-polar polymer systems.
Low migration tendency, ensuring color consistency in PVC, polyolefins, and engineering plastics.
Compliant with major global regulatory frameworks including EU REACH and US FDA 21 CFR for indirect food contact applications.
Coloration of rigid and flexible PVC profiles, cables, and flooring.
Masterbatch formulation for polypropylene (PP) and polyethylene (PE) packaging films.
Engineering thermoplastics including ABS, PS, and PC for automotive interior components.
High-performance inks for gravure and flexographic printing on plastic substrates.
Colored fibers and spunbond nonwovens in technical textiles.
| Chemical Type | Quinacridone derivative |
| Product Form | Free-flowing powder |
| Appearance | Red-violet fine powder |
| Primary Applications | PVC, polyolefins, engineering plastics, inks |
| Key Features | Thermal stability, lightfastness, low migration |
| Benefits | Consistent batch-to-batch performance, excellent dispersion, regulatory compliance |
| Particle Size (D50) | 0.08–0.12 µm (by laser diffraction) |
| Heat Stability | ≥280 °C (10 min, air atmosphere) |
Q1: What is the primary chemical class and typical application field for Permanent Red P-FK?
A: Permanent Red P-FK is a high-performance, polycyclic azo pigment known for excellent heat stability and lightfastness. It is widely used in engineering thermoplastics such as polyamide (PA), polybutylene terephthalate (PBT), and polyethylene terephthalate (PET), especially where processing temperatures exceed 280 °C.
Q2: Is Permanent Red P-FK suitable for food-contact plastics?
A: Permanent Red P-FK 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 evaluation of extractables, processing conditions, and applicable local regulations.
Q3: How does Permanent Red P-FK perform under high-temperature compounding and injection molding?
A: This pigment demonstrates outstanding thermal stability, retaining its color strength and hue integrity during extended residence times at temperatures up to 320 °C—making it well-suited for demanding high-heat polymer processing such as hot-runner systems and thin-wall molding.
Q4: What is the recommended dosage range for optimal color development and dispersion?
A: Dosage depends on the specific polymer matrix, desired shade intensity, and processing method, but it is typically used at low concentrations—generally ranging from 0.1% to 2% by weight—to achieve strong, uniform red shades with good transparency or opacity as required.
Q5: Can Permanent Red P-FK be used in combination with other pigments or effect pigments?
A: Yes—Permanent Red P-FK exhibits good compatibility with many common organic and inorganic pigments, as well as metallic and pearlescent effect pigments, enabling formulation flexibility for custom shades and special visual effects in high-performance plastic applications.
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E-mail: wangxingqiang@ericwchem.com
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