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High thermal stability suitable for demanding processing conditions up to 280 °C.
Excellent lightfastness and weather resistance, meeting ISO 105-B02 and ISO 105-A02 standards.
Superior dispersion performance in both polar and non-polar polymer systems.
Low volatile organic compound (VOC) content, compliant with REACH and RoHS requirements.
Consistent batch-to-batch color strength and hue, ensuring reproducible tinting results.
Automotive interior and exterior plastics including PP, ABS, and PC/ABS blends.
Engineering thermoplastics for consumer electronics housings and connectors.
Food-contact-approved polyolefin packaging films (subject to local regulatory compliance).
Industrial coatings requiring high chroma and long-term color retention.
Masterbatch formulations for fiber and film applications in technical textiles.
| Chemical Type | Benzimidazolone organic pigment |
| Product Form | Free-flowing powder |
| Appearance | Reddish-brown free-flowing powder |
| Primary Applications | Polyolefins, engineering plastics, coatings, masterbatches |
| Key Features | High heat stability, excellent dispersibility, low migration |
| Benefits | Color consistency, regulatory compliance, broad polymer compatibility |
| Regulatory Status | REACH registered; EU Food Contact compliant (EU No. 10/2011, subject to specific migration limits) |
| Storage Conditions | Store in cool, dry place below 30 °C; protect from moisture and direct sunlight |
Q1: What is the primary chemical class and structural basis of Irgazin Red L3685HD?
A: Irgazin Red L3685HD is a high-performance diketopyrrolopyrrole (DPP) organic pigment, characterized by its fused heterocyclic core that delivers exceptional chromatic strength, thermal stability, and lightfastness.
Q2: Is this pigment suitable for use in polymer masterbatches, and which thermoplastics show optimal compatibility?
A: Yes, L3685HD is widely used in polyolefin (e.g., PP, PE), PET, and engineering thermoplastic masterbatches. Its excellent heat stability and low volatility support processing at typical extrusion temperatures, with good dispersion behavior in non-polar and moderately polar matrices.
Q3: How does L3685HD perform under outdoor exposure conditions?
A: As a DPP-based pigment, L3685HD exhibits outstanding resistance to UV radiation and atmospheric weathering, making it well-suited for long-term exterior applications such as automotive coatings, architectural plastics, and agricultural films.
Q4: What are the recommended dispersion methods for achieving optimal color development and rheology control?
A: High-shear compounding—such as twin-screw extrusion or high-speed dissolver pre-mixing—is recommended to fully deagglomerate the pigment and achieve uniform distribution. Use of compatible dispersants or carrier resins may further enhance stability and gloss in final formulations.
Q5: Can L3685HD be used in food-contact compliant applications?
A: While L3685HD itself is not inherently food-contact approved, specific grades may be formulated and certified for regulated applications—subject to full compliance evaluation by the end-user, including migration testing and regulatory documentation review per applicable regional requirements.
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