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High chroma and excellent color strength in both aqueous and solvent-based systems.
Outstanding thermal stability up to 280°C, suitable for high-temperature processing.
Good lightfastness (ASTM Level 7–8) and weather resistance in outdoor applications.
Low volatility and non-volatile organic compound (VOC)-compliant formulation.
Excellent dispersibility in acrylic, polyester, and polyolefin resin matrices.
Automotive OEM and refinish coatings.
Engineering plastics for electronic housings and consumer appliances.
High-performance industrial coil coatings.
Polypropylene (PP) and polyethylene (PE) masterbatches.
Architectural and industrial powder coatings.
| Chemical Type | Azo pigment (Pigment Red 146) |
| Product Form | Free-flowing dry powder |
| Appearance | Reddish-brown fine powder |
| Primary Applications | Coatings, plastics, inks |
| Key Features | High tinctorial strength, low migration, good heat stability |
| Benefits | Consistent batch-to-batch color, reduced dosage requirement, extended service life |
| Particle Size (D50) | 0.18–0.22 µm |
| pH Value (5% aqueous slurry) | 6.2–7.0 |
Q1: What is the primary chemical class and pigment type of y HR-100 P.R.146?
A: y HR-100 P.R.146 is an organic pigment based on the monoazo structure, classified under Pigment Red 146 (PR146) according to the Colour Index. It is a high-performance, non-heavy-metal pigment designed for demanding dispersion and chromatic stability requirements.
Q2: Is y HR-100 P.R.146 suitable for use in food-contact plastics or packaging applications?
A: y HR-100 P.R.146 is not pre-qualified for direct food-contact applications. Its suitability depends on full regulatory review of the final formulation, processing conditions, and end-use compliance requirements. Customers must validate migration behavior and regulatory acceptance with their own technical and regulatory teams prior to use in such applications.
Q3: How does y HR-100 P.R.146 perform in terms of heat stability during polymer processing?
A: This pigment demonstrates good thermal stability up to approximately 260–280 °C, making it suitable for common thermoplastic processing methods including injection molding and extrusion of polyolefins and engineering resins. Performance may vary depending on residence time, shear history, and matrix compatibility.
Q4: What are the recommended dispersion methods for optimal color development and consistency?
A: For best results, high-shear dispersion techniques—such as twin-screw extrusion or high-speed dissolvers—are recommended. Pre-dispersed masterbatches are commonly used to ensure uniform distribution and minimize agglomeration. Wetting agents and carrier resins compatible with the target polymer system should be selected to support stable dispersion.
Q5: Can y HR-100 P.R.146 be used in water-based systems such as coatings or inks?
A: Yes, y HR-100 P.R.146 can be formulated into aqueous systems when properly surface-treated and stabilized. It is typically supplied in dispersible grades optimized for water-based architectures, though performance depends on pH, ionic strength, and the choice of dispersants and rheology modifiers.
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