OB-1Y
Optical Brightener OB-1Y is a yellowish shade variant of the OB-1 series. It has excellent thermal stability and high-temperature resistance, suitable for applications requiring warmer white tones.
Key Features
Technical Specifications
| C.I. NO. | C.I. 393 |
| Appearance | Yellowish green crystal powder |
| Purity | ≥98% |
| Melting Point | 355-360°C |
| Volatility | ≤0.5% |
Physical Data & Fastness Properties
| Shade/Tone | Yellowish |
| Ash | ≤0.03% |
| Max Absorption Wavelength | 374nm (in ethanol) |
| Max Emission Wavelength | 434nm (in ethanol) |
| Heat Resistance | Excellent (375-400°C) |
| Light Fastness | Excellent |
| Weather Fastness | Excellent |
Applications
- Polyester resin and fiber
- Nylon (PA)
- Polypropylene (PP)
- ABS plastics
- Polystyrene (PS)
- Engineering plastics
Usage Instructions
Transparent: 0.0025-0.005%. Commonly used: 0.01-0.05%. Due to the dosage amount being small, please mix thoroughly for the best effect.
Related Products
You may also be interested in these products
OB-ER-I
Optical brightener ER-I has a high whitening brightening effect and excellent fastness to sublimation. It is used in whitening of polyester fiber and plastics such as PE, PP, PVC.
OB-ER-II
Optical brightener ER-II has bluish color shade with high whitening brightening effect and excellent fastness to sublimation. Mainly used as whitening agent for polyester fiber, as well the raw material of making paste form brightening agent in textile dyeing.
OB-FP-127
Optical Brightener FP-127 is widely used for whitening various plastic products, especially for flex PVC and PS, which have better affinity and whitening effects. It has excellent whitening and brightening effects for synthetic leather.
OB-KCB
Optical Brightener KCB is widely used in the whitening of synthetic fiber and plastics. KCB is the first choice for whitening EVA foam for footwear materials. It has strong light stability and heat resistance and is chemically stable.