| Product Category | Fluorescent brightener-Plastics and paints, inks and coatings fluorescent brightener | |
| Product Name | Fluorescent brightener OB | |
| Chemical Name | 2.5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene | |
| CAS No. | 7128-64-5 | |
| C.I. No. | 184 | |
| Molecular Formula | C26H26N₂O₂S | |
| Molecular Weight | 430 | |
| Main Ingredients | 2.5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene | |
| Performance and characteristics | 1. Small dosage, high whitening intensity, very good whitening effect can be produced with a small dosage. 2. Wide application performance, suitable for whitening of various plastics. 3. Good compatibility with plastics, high temperature resistance and excellent light and weather resistance. 4. Whitening, brightening and saturation of paints, inks and coatings. |
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| Scope of application | 1. Particularly suitable for whitening plastics such as polyolefins, polyamides, and polyacrylonitrile. 2. Widely used in films, injection molding and extrusion molding materials, suitable for processing all plastics. |
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| Application Method | Recommended dosage: Add about 20g of OB brightener per 100kg of material. The specific dosage is adjusted according to the formula. | |
| Packaging and storage | 1kg iron can × 12 cartons, lined with plastic bag or packed as required by the user, stored in a cool, dry place away from light. | |
| Technical conditions (technical indicators) | ||
| Appearance | Light yellow powder | |
| Color | Blue-white (similar to standard sample) | |
| Purity | ≥99% | |
| Melting point | 200-202℃ | |
| Fineness | Greater than 100 mesh | |
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