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High-intensity fluorescence under UV and daylight illumination.
Excellent thermal stability up to 180°C during processing.
Good compatibility with common thermoplastics, inks, and coatings.
Non-toxic formulation compliant with REACH and RoHS directives.
Consistent particle size distribution for uniform dispersion and color strength.
Security printing in banknotes and ID documents.
Fluorescent inks for packaging and labeling.
UV-responsive masterbatches for plastic films and injection-molded parts.
High-visibility safety signage and PPE components.
Specialty coatings for automotive trim and decorative finishes.
| Chemical Type | Organic fluorescent dye dispersed in polymeric carrier |
| Product Form | Free-flowing granular concentrate |
| Appearance | Yellow-orange granules |
| Primary Applications | Plastics, inks, and protective coatings |
| Key Features | UV-stable, low migration, high chroma |
| Benefits | Easy dispersion, minimal equipment wear, batch-to-batch consistency |
| Recommended Carrier Resin | LDPE or EVA-based systems |
| Storage Conditions | Keep sealed in cool, dry place below 30°C; avoid direct sunlight |
Q1: What types of resin systems is Korea PA-503 compatible with?
A: Korea PA-503 exhibits good compatibility with common thermoplastic resins including ABS, PS, PVC, and acrylics. It can also be incorporated into certain thermoset systems such as unsaturated polyesters and epoxy formulations, though dispersion stability and thermal resistance should be verified during initial trials.
Q2: How does PA-503 perform under UV exposure and elevated processing temperatures?
A: PA-503 offers moderate UV stability suitable for indoor applications and short-term outdoor exposure. Its fluorescent intensity may gradually diminish under prolonged UV irradiation. The pigment demonstrates thermal stability up to typical melt-processing temperatures of common engineering plastics, but extended residence at temperatures above 220°C is not recommended without prior compatibility testing.
Q3: What is the recommended method for dispersing PA-503 in polymer matrices?
A: For optimal dispersion and fluorescence uniformity, pre-mixing PA-503 with a carrier resin or masterbatch base is strongly advised. High-shear compounding—such as twin-screw extrusion—is preferred over simple dry blending. Avoid excessive shear or prolonged melt residence to preserve pigment integrity and brightness.
Q4: Is PA-503 suitable for applications requiring regulatory compliance for food contact or toys?
A: Korea PA-503 is not certified for direct food-contact or toy-safety regulated applications. It is intended for general industrial and decorative uses where regulatory approval for migration or toxicity is not required. Customers must conduct their own due diligence and testing to meet specific regional or end-use compliance requirements.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
