Chemical Name:
1,4-Bis(benzoxazolyl-2-yl)naphthalene;
| Formula | C24H14N2O2 |  |
| MW | 362 | |
| CAS# | 5089-22-5 |
Synonym name:
Hostalux KCB, Fluorescent Brightener 367 (FB 367) , c.i.367, Fluorescent Brightener KCB,Optical Brightening Agent KCB;FB 367
Specification:
| Appearance | yellow crystalline powder |
| Dosage | 0.01-0.05% |
| Melting point | 210-212℃ |
| Purity | ≥99% |
| Maximum UV Absorption Spectrum | 370nm |
Package :
25kg per fiber drum, 6*2 layer 12 drums per pallet, 5CBM per ton t,or according to customers’ requirements.
Storage:
Store in a cool, dry place away from direct sunlight to maintain product stability and effectiveness.
Features:
Ecochem KCB is a high-performance fluorescent whitening agent with a strong whitening effect and a bright blue hue. It offers excellent heat resistance, weather resistance, and chemical stability, making it one of the most effective optical brighteners available.
Applications:
- Ideal for whitening plastic and synthetic fiber products
- Enhances brightness in non-ferrous plastics
- Widely used in EVA copolymers, making it a preferred choice for sports shoes
- Suitable for PE, PP, PVC, PS, ABS, PMMA, and other plastic films, molding materials, and injection-molded products
- Effective for polyester fibers, paints, and natural coatings
Recommended Dosage:
For plastics and resins, the typical dosage ranges from 0.01% to 0.03% (10-30g per 100kg of plastic raw material). The exact amount should be adjusted based on the desired whiteness level. If UV absorbers (e.g., titanium dioxide) are used, the whitening agent dosage may need to be modified accordingly.
| Material | Recommended Dosage (g/100kg raw material) |
|---|---|
| PE (Polyethylene) | 10-25g |
| PP (Polypropylene) | 10-25g |
| PS (Polystyrene) | 10-20g |
| PVC (Polyvinyl Chloride) | 10-30g |
| ABS (Acrylonitrile Butadiene Styrene) | 10-30g |
| EVA (Ethylene-Vinyl Acetate) | 10-30g |
| Transparent plastic films | 1-10g |
