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High heat stability suitable for demanding printing processes including flexographic and gravure inks.
Excellent lightfastness and weather resistance for outdoor applications.
Good dispersibility in common organic solvent-based and water-based ink systems.
Low volatile organic compound (VOC) content, supporting sustainable printing formulations.
Consistent batch-to-batch color reproducibility and hue strength.
Flexographic inks for packaging films and labels.
Gravure inks used in high-speed food and pharmaceutical packaging.
Offset inks for commercial and publication printing.
Water-based inks for corrugated board and paper packaging.
Solvent-based inks for laminated flexible packaging.
| Chemical Type | Azo pigment (disazo) |
| Product Form | Free-flowing powder |
| Appearance | Uniform brown powder |
| Primary Applications | Printing inks (flexo, gravure, offset, water-based) |
| Key Features | Heat stable, lightfast, dispersible, low VOC |
| Particle Size (D50) | Approx. 0.15–0.25 µm |
| Specific Surface Area | Approx. 45–60 m²/g |
| Storage Conditions | Store in cool, dry place; protect from moisture and direct sunlight |
Q1: What is the primary application field for Hostaprint Brown HFR 34 VP5298?
A: This pigment is specifically developed for high-performance heat transfer printing inks used on synthetic textiles, especially polyester and polyester blends, where excellent sublimation fastness and clean color reproduction are required.
Q2: Is Hostaprint Brown HFR 34 VP5298 suitable for food-contact applications?
A: No — this pigment is not intended or approved for direct or indirect food-contact use. It is formulated for decorative textile printing and does not meet regulatory requirements for food packaging or food-safe inks.
Q3: How should this pigment be dispersed in ink formulations?
A: Optimal dispersion is achieved using high-shear mixing equipment such as bead mills or three-roll mills. Pre-wetting with compatible solvents or resin solutions is recommended to ensure uniform particle distribution and prevent agglomeration.
Q4: What is the typical dosage range in heat transfer ink systems?
A: Dosage depends on formulation requirements and desired color strength, but it is generally used at low concentrations — typically ranging from 0.1% to 2% by weight relative to the total ink solids.
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E-mail: wangxingqiang@ericwchem.com
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