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High chroma and excellent red shade purity for vibrant, consistent coloration.
Outstanding lightfastness and weather resistance in demanding outdoor applications.
Good thermal stability up to 200 °C, suitable for high-temperature processing.
Excellent dispersibility in both solvent-based and water-based systems.
Low volatile organic compound (VOC) content, supporting sustainable formulation requirements.
Automotive coatings including basecoats and clearcoat systems.
Industrial maintenance and coil coatings.
Plastic coloration for polyolefins and engineering thermoplastics.
High-performance printing inks for packaging and labels.
Architectural and protective coatings requiring long-term color retention.
| Chemical Type | Quinacridone derivative |
| Product Form | Free-flowing powder |
| Appearance | Red-violet fine powder |
| Primary Applications | Coatings, plastics, inks |
| Key Features | High transparency, good migration resistance |
| Benefits | Enhanced color strength, improved batch-to-batch consistency |
| Regulatory Compliance | REACH registered; compliant with EU Directive 2004/42/EC (for coatings) |
Q1: What are the primary application areas for Sico Fast Red L3855?
A: Sico Fast Red L3855 is widely used in high-performance industrial coatings, including automotive refinishes, coil coatings, and general-purpose solvent-based and high-solids decorative paints. It is also suitable for select plastic applications requiring good heat stability and lightfastness, such as rigid PVC and engineering thermoplastics.
Q2: How does Sico Fast Red L3855 compare to other red pigments in terms of weather resistance?
A: As a high-performance benzimidazolone-based organic pigment, Sico Fast Red L3855 offers excellent resistance to UV radiation and atmospheric exposure—significantly outperforming conventional azo reds. Its weathering performance is well-suited for exterior architectural and automotive applications where long-term color retention is critical.
Q3: Is Sico Fast Red L3855 compatible with waterborne coating systems?
A: Yes, Sico Fast Red L3855 can be successfully incorporated into waterborne systems—including acrylic and polyurethane dispersions—when properly dispersed using appropriate surfactants or polymeric dispersants. Performance optimization requires tailored dispersion protocols to ensure colloidal stability and color development.
Q4: What is the typical dosage range for achieving optimal color strength and opacity?
A: Dosage depends on formulation requirements and desired shade intensity, but Sico Fast Red L3855 is typically used at low concentrations due to its high tinting strength and hiding power—generally ranging from 0.1% to 2% by weight in most coating and plastic applications.
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E-mail: wangxingqiang@ericwchem.com
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