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High chroma yellow shade with excellent lightfastness and weather resistance.
Optimized for low-viscosity systems, enabling easy incorporation and uniform dispersion in water-based formulations.
Low VOC and APEO-free formulation, supporting compliance with stringent environmental and regulatory standards.
Excellent compatibility with acrylic, styrene-acrylic, and vinyl acetate copolymer emulsions.
Consistent batch-to-batch color strength and hue stability under standard storage conditions.
Architectural interior and exterior wall paints.
Water-based industrial maintenance coatings.
Wood coatings for furniture and cabinetry.
General-purpose decorative coatings for metal and masonry substrates.
Low-VOC and eco-label certified coating systems (e.g., EU Ecolabel, Blue Angel).
| Chemical Type | Organic pigment dispersion (Azo yellow) |
| Product Form | Concentrated aqueous color paste |
| Appearance | Homogeneous, viscous liquid; bright yellow to greenish-yellow shade |
| Primary Applications | Water-based architectural and industrial coatings |
| Key Features | High tinctorial strength, excellent wetting & dispersing properties |
| Benefits | Reduced formulation complexity, improved color consistency, simplified dosing |
| pH (25°C) | 7.5 – 8.5 |
| Storage Stability | ≥ 12 months at 5–30°C in sealed original container |
Q1: What types of polymer systems is Colanyl Yellow HRD 131 most commonly used in?
A: Colanyl Yellow HRD 131 is specifically formulated for use in polyolefin-based systems, including PP and PE, and demonstrates good compatibility in thermoplastic elastomers and certain engineering plastics. It is not recommended for high-temperature engineering resins requiring extended thermal stability above 260 °C.
Q2: How should this color paste be incorporated into the base polymer during processing?
A: The paste is typically introduced via gravimetric or volumetric dosing directly into the extruder feed throat or side feeder. Pre-blending with a portion of the base resin prior to extrusion can improve dispersion uniformity, especially in high-output or highly filled formulations.
Q3: Does Colanyl Yellow HRD 131 contain heavy metals or halogens?
A: This product is formulated without intentionally added heavy metals such as lead, cadmium, mercury or hexavalent chromium, and is free from brominated and chlorinated flame retardants. It complies with Clariant’s internal restricted substances list aligned with global regulatory expectations for general-purpose colorants.
Q4: What is the typical dosage range for achieving full opacity or strong chroma in polypropylene?
A: Dosage depends on the required shade depth and substrate opacity, but typical usage in PP ranges from 0.1% to 2% by weight. For standard yellow tones, concentrations near the lower end of this range are often sufficient due to the high tinting strength of the pigment system.
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