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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 matrices.
Low migration tendency, ensuring color integrity in food-contact-compliant compounds (subject to regulatory approval).
Consistent batch-to-batch reproducibility meeting Clariant’s stringent quality control standards.
Polypropylene (PP) and polyethylene (PE) packaging films.
Automotive interior components requiring long-term UV stability.
Household appliances with high-gloss colored housings.
Technical parts for medical devices where color consistency and purity are critical.
Outdoor furniture and construction profiles exposed to harsh climatic conditions.
| Chemical Type | Azo pigment (disazo) |
| Product Form | Free-flowing powder |
| Appearance | Reddish brown powder |
| Primary Applications | Polyolefins, engineering plastics, masterbatches |
| Key Features | Thermal stability, lightfastness, low volatility |
| Benefits | Enhanced color strength, minimal plate-out, compatibility with common additives |
| Regulatory Compliance | EU REACH registered; compliant with FDA 21 CFR §178.3297 (for specific use conditions) |
| Recommended Storage | Store in original sealed container at 15–25 °C, protected from moisture and direct sunlight |
Q1: What is the primary chemical class of Graphtol Red F3RK 70?
A: Graphtol Red F3RK 70 is a high-performance, azo-based organic pigment, specifically engineered for excellent chromatic strength, thermal stability, and dispersibility in demanding polymer systems.
Q2: Is this pigment suitable for food-contact plastics?
A: Graphtol Red F3RK 70 is not certified for direct food-contact applications. It is intended for general-purpose industrial and decorative plastic coloration where regulatory compliance for food contact is not required.
Q3: Which polymer systems show optimal compatibility with this pigment?
A: This pigment demonstrates excellent compatibility and dispersion stability in polyolefins (e.g., PP, HDPE), ABS, PS, and engineering thermoplastics such as PA6 and PBT—particularly when processed via injection molding or extrusion.
Q4: How should Graphtol Red F3RK 70 be incorporated into polymer formulations?
A: It is typically supplied as a dry powder or pre-dispersed masterbatch. For optimal performance, use high-shear compounding equipment and follow Clariant’s recommended dispersion protocols—dosage generally ranges from 0.1% to 2% by weight, depending on desired shade intensity and substrate opacity.
Q5: Does this pigment offer good resistance to migration and blooming in finished parts?
A: Yes—Graphtol Red F3RK 70 exhibits low tendency toward migration and blooming in properly formulated polyolefin and styrenic systems, owing to its molecular structure and optimized particle size distribution.
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