Fluorescent Brightener OB for PVC, PE, PP, PS & ABS | Applications, Dosage and Processing Guide
Release time:
2026-07-21
Fluorescent Brightener OB – High-Efficiency Optical Brightener for Plastics
Fluorescent Brightener OB is a high-performance optical brightening agent widely used in the plastics industry. It provides excellent whitening performance, outstanding thermal stability, and requires only a very small dosage to achieve remarkable brightness enhancement. It is one of the most commonly used fluorescent brighteners for PVC and many other thermoplastics.
In addition to plastics, Optical Brightener OB is also suitable for polyester fibers, coatings, paints, inks, and acrylic products. It can also be combined with color pigments to create brighter and more vivid colored plastic products.
Key Features of Fluorescent Brightener OB
- Excellent whitening and brightening performance
- High thermal stability during extrusion and injection molding
- Low dosage with high efficiency
- Improves product gloss and visual appearance
- Helps eliminate yellowish tones in plastic materials
- Compatible with various pigments and color masterbatches
- Suitable for a wide range of polymer processing applications
Main Applications
Fluorescent Brightener OB is widely used in:
- PVC pipes, fittings, profiles and sheets
- PVC films and transparent products
- ABS engineering plastics
- PS products
- PE films and injection molded products
- PP woven bags, fibers and household products
- Polyester fibers
- Paints and coatings
- Printing inks
- Acrylic products
Recommended Dosage
The following dosage recommendations are based on 100 kg of polymer.
| Polymer | Application | Recommended Dosage |
|---|---|---|
| PVC | White products | 0.01–0.05% (10–50 g) |
| PVC | Transparent products | 0.0001–0.001% (0.1–1 g) |
| PS | White products | 0.001% (1 g) |
| PS | Transparent products | 0.0001–0.001% (0.1–1 g) |
| ABS | Natural color | 0.01–0.05% (10–50 g) |
| ABS | White products | 0.01–0.05% (10–50 g) |
| PE / PP | Transparent or natural color | 0.0005–0.001% (0.5–1 g) |
| PE / PP | White products | 0.005–0.05% (5–50 g) |
Note: The dosage may be adjusted according to product color, processing conditions, resin grade, and customer brightness requirements.
When UV absorbers are added to the formulation, the optimum dosage of Fluorescent Brightener OB should be adjusted accordingly to maintain the best whitening performance.
Processing Recommendations
Since the addition level of Fluorescent Brightener OB is extremely low, thorough dispersion is essential to achieve consistent whitening throughout the polymer.
Recommended methods include:
- Dry blending with PVC resin before processing
- Premixing with other additives for better distribution
- Using a Fluorescent Brightener OB masterbatch to improve dispersion and production consistency
- Suitable for extrusion, injection molding, blow molding, film production, and compounding
Proper dispersion ensures maximum whitening efficiency, stable color, and excellent product appearance.
Why Choose Fluorescent Brightener OB?
Compared with conventional whitening additives, Fluorescent Brightener OB offers:
- Lower addition levels
- Better cost-performance ratio
- Excellent compatibility with most thermoplastics
- Improved surface gloss and brightness
- Stable performance under high processing temperatures
- Broad application across multiple plastic industries
It is an ideal solution for manufacturers seeking brighter, cleaner-looking plastic products while maintaining production efficiency.
Looking for a Reliable Fluorescent Brightener OB Supplier?
We supply high-quality Fluorescent Brightener OB with stable quality and excellent whitening performance for PVC, PE, PP, ABS, PS and many other polymer applications.
Whether you are producing pipes, profiles, films, sheets, masterbatches, injection molded parts or engineering plastics, our technical team can recommend the most suitable dosage and formulation according to your production requirements.
Keywords: Fluorescent Brightener OB, Optical Brightener OB, OB Optical Brightener for PVC, Fluorescent Whitening Agent OB, PVC Brightener, Plastic Optical Brightener, Brightener for PE, Brightener for PP, Brightener for ABS, Brightener for PS, Optical Brightening Agent Supplier.
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