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High-intensity fluorescence under UV and daylight illumination for exceptional visual impact.
Excellent thermal stability up to 220°C, enabling compatibility with high-temperature processing.
Good dispersion stability in both polar and non-polar polymer matrices.
Low migration tendency in PVC, ABS, and polystyrene applications.
Compliant with EU REACH and RoHS directives for restricted substances.
Safety signage and emergency egress markings.
High-visibility personal protective equipment (PPE) coatings.
Fluorescent inks for security printing and brand authentication.
Thermoplastic masterbatches for automotive interior trim components.
UV-curable decorative films and laminates.
| Chemical Type | Organic fluorescent pigment (benzoxazole derivative) |
| Product Form | Free-flowing fine powder |
| Appearance | Yellow-green crystalline solid |
| Primary Applications | Polymer coloring, ink systems, coating formulations |
| Key Features | UV-stable, non-bleeding, low volatility |
| Benefits | Enhanced daytime visibility, consistent batch-to-batch performance |
| Storage Conditions | Store in cool, dry place below 30°C; protect from direct sunlight |
| Regulatory Status | REACH registered; no SVHCs above 0.1% w/w |
Q1: What types of resins and polymers is Klamar 28 28 compatible with?
A: Klamar 28 28 demonstrates good compatibility with a wide range of thermoplastic and thermosetting systems, including PVC, ABS, PS, PMMA, polyesters, and acrylic-based coatings. Performance may vary depending on resin polarity and processing temperature—compatibility testing in the final formulation is recommended.
Q2: How does heat stability affect its use in high-temperature processing?
A: Klamar 28 28 offers moderate thermal stability suitable for standard extrusion and injection molding conditions below 220 °C. Prolonged exposure above this threshold may lead to gradual fluorescence intensity loss; therefore, optimized residence time and temperature control are advised for demanding applications.
Q3: Is Klamar 28 28 suitable for outdoor applications requiring UV resistance?
A: While Klamar 28 28 delivers strong initial fluorescence, it is not inherently UV-stabilized. For outdoor or long-term UV-exposed uses, co-addition of appropriate UV absorbers and HALS stabilizers is strongly recommended to maintain brightness and color fidelity over time.
Q4: What is the typical dosage range for achieving optimal fluorescence effect?
A: Dosage depends on the base material, desired intensity, and application method—but Klamar 28 28 is typically used at low concentrations, generally ranging from 0.1% to 2% by weight. Higher loadings do not always yield proportionally brighter results and may impact dispersion or mechanical properties.
Q5: Can Klamar 28 28 be used in food-contact plastics or toys?
A: Klamar 28 28 is intended for general industrial applications and is not pre-approved for direct food contact or toy safety compliance. Customers must conduct full regulatory evaluation—including migration testing and local regulatory review—before use in such sensitive applications.
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E-mail: wangxingqiang@ericwchem.com
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