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Highly concentrated carbon black dispersion for consistent jetness and color strength.
Optimized for polyolefin processing with excellent melt stability and low plate-out tendency.
Low dust formulation enhances workplace safety and handling efficiency.
Excellent dispersion uniformity across injection molding, blow molding, and extrusion processes.
RoHS-compliant and meets stringent regulatory requirements for consumer-facing packaging.
Food-grade rigid packaging (e.g., containers, caps, closures).
Automotive interior components requiring UV resistance and low VOC emission.
Household appliance housings and structural parts.
Medical device packaging requiring consistent opacity and sterility assurance.
| Chemical Type | Carbon black–based masterbatch |
| Product Form | Free-flowing granules |
| Appearance | Jet-black, uniform cylindrical pellets |
| Primary Applications | Polypropylene (PP) and polyethylene (PE) systems |
| Key Features | High jetness, low haze, excellent thermal stability |
| Carrier Resin | Homopolymer PP (MFR 12–18 g/10 min @ 230°C/2.16 kg) |
| Carbon Black Loading | 25 ± 1 wt% |
| Heavy Metals Compliance | Meets EU 2023/2041 and USP <232>/<233> limits |
Q1: What is the primary function of Cabot HD2776 Masterbatch in polymer processing?
A: Cabot HD2776 Masterbatch is a high-dispersion carbon black concentrate designed to provide consistent jetness, enhanced UV protection, and improved electrical conductivity in thermoplastic compounds—particularly polyolefins and engineering resins.
Q2: Which polymer systems is HD2776 most commonly used with?
A: HD2776 demonstrates excellent compatibility and dispersion in polyethylene (PE), polypropylene (PP), and certain styrenic polymers. It is widely selected for applications requiring high surface quality and low haze in injection-molded and extruded parts.
Q3: How should HD2776 be incorporated into base resins during compounding?
A: HD2776 is typically introduced via gravimetric or volumetric feeding downstream of the main resin feed zone. For optimal dispersion, it is recommended to use moderate shear conditions and avoid excessive residence time at elevated temperatures to preserve masterbatch integrity.
Q4: Does HD2776 require special handling or drying prior to processing?
A: While HD2776 is supplied in a dry, free-flowing pellet form, standard hygroscopic precautions apply. It is advisable to store in a cool, dry environment and process without pre-drying unless ambient humidity is exceptionally high—no dedicated drying step is generally required for typical production conditions.
Q5: What are key considerations for achieving uniform dispersion with HD2776?
A: Uniform dispersion depends on adequate melt mixing energy, appropriate screw design (e.g., mixing elements in the final third of the barrel), and sufficient residence time. Starting with lower addition rates and gradually optimizing based on visual and performance evaluation is strongly recommended.
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