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High thermal stability suitable for processing temperatures up to 280 °C.
Excellent lightfastness and weather resistance in outdoor applications.
Good dispersibility in common polymer matrices including polyolefins and engineering plastics.
Low migration tendency, meeting stringent regulatory requirements for food-contact and toy applications.
Consistent batch-to-batch color strength and hue reproducibility.
Polypropylene (PP) and polyethylene (PE) packaging films.
Automotive interior components requiring long-term UV stability.
Household appliances with high-gloss colored housings.
Medical device housings where color consistency and biocompatibility support are critical.
Masterbatch formulations for fiber and nonwoven applications.
| Chemical Type | Quinacridone derivative |
| Product Form | Free-flowing powder |
| Appearance | Reddish-violet fine 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) | 0.15–0.25 µm |
| Heat Resistance | Up to 280 °C (short-term) |
Q1: What is the primary application field for Clariant H4G Organic Pigment?
A: Clariant H4G is primarily developed for high-performance coloration in engineering thermoplastics—especially polyamide (PA), polybutylene terephthalate (PBT), and polyphenylene sulfide (PPS)—where excellent thermal stability, dispersion behavior, and color consistency under processing conditions are required.
Q2: How does H4G perform under high-temperature processing conditions?
A: H4G exhibits very good thermal stability, enabling reliable use in melt-processing operations such as injection molding and extrusion at temperatures commonly encountered with high-melting engineering polymers—typically up to 280–300 °C for short residence times.
Q3: Is H4G suitable for food-contact applications?
A: H4G is not pre-approved for direct food-contact applications. Its suitability depends on final regulatory assessment within the specific polymer matrix, processing conditions, and end-use requirements. Customers must conduct full compliance evaluation—including migration testing if applicable—based on relevant regional regulations.
Q4: What is the typical dosage range for H4G in polymer masterbatches?
A: Dosage depends on formulation requirements and desired color strength, but H4G is typically used at low concentrations—generally ranging from 0.1% to 2% by weight in the final compound—to achieve strong, clean shades with good opacity and minimal impact on mechanical properties.
Q5: Does H4G require special handling or stabilization during storage or compounding?
A: H4G is supplied as a dry, free-flowing powder and is stable under normal ambient storage conditions. For optimal dispersion, it is recommended to pre-mix with carrier resin before high-shear compounding; no additional stabilizers are required, though compatibility with other additives in the formulation should be verified empirically.
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