Optical Brightener KCB (Green Shade)
Optical Brightener KCB
Whitening Agent| KCB
Basic Specifications
| Product Name | Optical Brightener KCB (Green Shade) |
| English Name | Optical Brightener KCB |
| CAS Registry Number | 5089-22-5 |
| C.I. Number | 367 |
| Molecular formula | C24H14N2O2 |
| Molecular Weight | 362 |
| Product Categories | Whitening Agent |
| Product Line | KCB |
| Hue | Blue-violet fluorescent brightening effect |
| Appearance | Yellow-green crystalline powder (greenish tint) |
Product Features
- Significant Whitening Effect — Emits blue-violet fluorescence under UV light, complementing the matrix's yellow light to deliver outstanding whitening and brightness enhancement.
- Excellent lightfastness — maintains stable whitening effects even under prolonged exposure to light.
- High migration resistance — No reaction with foaming agents or crosslinking agents; no blooming or migration.
- Green-Phase Pigment — Yellow-green powder with a greenish hue and excellent dispersibility.
- Wide applicability — excellent whitening effect on EVA, PVC, TPR, PU foam, and more
Application Areas
EVA foamPlastic filmInjection MoldingSynthetic RubberPaintPolyester
App Data
| Applicable Systems | Recommendation | Behavior Description |
|---|---|---|
| EVA foam | ✅ Recommended | Usage: 0.01–0.05% |
| PVC (including foamed PVC) | ✅ Recommended | Usage: 0.01–0.05% |
| TPR | ✅ Recommended | Significant whitening effect |
| PE / PP | ✅ Recommended | Usage: 0.005–0.03% |
| PU foam | ✅ Recommended | Good compatibility |
| PS / ABS | ✅ Recommended | May be used for whitening |
| PA / PC | ⚠️ Use with Caution | Melting point: 210–212°C. Not recommended for high-temperature engineering plastic processing. |
| Usage Notes | ⚠️ Use with Caution | For optimal dispersion, we recommend first preparing a whitening concentrate masterbatch before use. Use is not advised for high-temperature engineering plastics (such as PA/PC) when processing temperatures exceed 250°C. |
Notes
- Please test with a sample first to confirm the optimal dosage and heat resistance conditions.
- The powder color chart may differ from the final product color. Please refer to the actual colored result.
- Evaluate weather resistance for long-term outdoor exposure.
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