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High photostability under UV exposure, ensuring long-term color retention in demanding applications.
Excellent dispersion stability in aqueous and solvent-based systems without flocculation or settling.
Low volatility and non-migrating formulation, supporting compliance with stringent regulatory requirements.
Optimized for compatibility with UV-curable resins, including acrylates and epoxy-functional oligomers.
Consistent batch-to-batch reproducibility, certified via Clariant’s global quality control protocols.
UV-curable inks for digital inkjet printing on packaging and labels.
UV-cured coatings for automotive interior trim and decorative surfaces.
UV-curable adhesives requiring transparent, lightfast coloration.
Photopolymers used in additive manufacturing (SLA/DLP 3D printing resins).
Functional coatings for optical components and display overlays.
| Chemical Type | Organic pigment dispersion in reactive monomer carrier |
| Product Form | Viscous liquid paste |
| Appearance | Homogeneous, opaque violet-brown paste |
| Primary Applications | UV-curable inks, coatings, adhesives, and 3D printing resins |
| Key Features | UV-stabilized, low-VOC, non-settling, ready-to-use dispersion |
| Storage Conditions | Store at 5–25 °C; protect from freezing and direct sunlight |
| Shelf Life | 12 months from date of manufacture when stored as recommended |
| Regulatory Compliance | REACH registered; compliant with EU Directive 2009/48/EC (Toy Safety) for migration limits |
Q1: What is the primary function of Hostatint UV BV Color Paste in UV-curable systems?
A: Hostatint UV BV Color Paste is a highly concentrated, photostable pigment dispersion specifically engineered for use in UV-curable inks, coatings, and adhesives. Its main function is to provide intense, consistent coloration while maintaining excellent compatibility with acrylate-based resins and minimal impact on cure speed or final film properties.
Q2: Is this paste suitable for food-contact applications?
A: Hostatint UV BV Color Paste is not pre-approved for direct food-contact applications. Its suitability depends on full formulation assessment—including final curing conditions, substrate type, and intended regulatory framework—and must be verified by the end-user through appropriate migration testing and compliance evaluation.
Q3: How should the paste be incorporated into UV formulations?
A: The paste is designed for easy incorporation via high-shear mixing at ambient temperature. It is recommended to add it after monomers and oligomers but before photoinitiators, followed by thorough dispersion to ensure homogeneity. Avoid excessive heat or prolonged mechanical stress during mixing to preserve pigment integrity.
Q4: Does this product contain volatile organic compounds (VOCs) or solvents?
A: Hostatint UV BV Color Paste is a solvent-free, VOC-free dispersion based on reactive acrylate carriers. It contains no added aromatic hydrocarbons, ketones, or other regulated solvents, supporting low-emission UV formulation goals.
Q5: What storage conditions are recommended to maintain stability?
A: Store in original sealed containers at temperatures between 5 °C and 30 °C, away from direct sunlight and sources of UV radiation. Prolonged exposure to freezing or elevated temperatures may affect rheology and dispersion stability; always inspect for homogeneity before use.
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