Specification
|
Molecular Formula: C29H20N2O2 |
Molecular Weight: 442 |
|
CAS No: 5242-49-9 |
C.I. No.: 368 |
|
Appearance: yellowish powder |
Melting point(℃): 269-271℃ |
|
Assay:99% |
Fineness: ≥ 200 meshes |
Features
Optical Brightener KSN
1. being highly whiteness with small usage.
2. multipurpose used for whitening of polyester fiber and plastic.
3. having a good compatibility and good fastness to light and sublimation. Can be used for high temperature process.
4. Although Optical Brightener KSN and Optical Brightener OB-1 share a similar chemical structure, but optical brightener KSN outperforms OB-1 in whitening effect and compatibility for polyester fibers and plastic products - capabilities that OB-1 cannot match
Applications
Optical Brightener KSN mainly be used in whitening of polyester, polyamide, polyacrylonitrile fiber, the plastic film and all plastic pressing process. Can suitable for synthesizing high polymer including polymeric process.
Reference dosage
Optical Brightener KSN is a powder product. It must be thoroughly mixed with the material before use and can be added at any processing stage of the synthetic polymer.
Recommended Dosage
| Application Type | Recommended Dosage (vs. raw material weight) | Reference (per ton of material) |
|---|---|---|
| Plastic/Polyester Pellets | 0.01% - 0.05% | 100g - 500g |
| Transparent Plastic Products | 0.0005% - 0.002% | 5g - 20g |
| Polyester Fibers | 0.01% - 0.02% | 100g - 200g |
The specific dosage should be adjusted according to the whiteness requirement of the substrate and product characteristics. It is recommended to conduct small-scale trials to determine the optimal dosage.
Package & Storage
10kg or 25kg/ fiber drums. It can be packed in other forms according to user's requirements.
Shelf life: not more than 24 months in the room temperature.
Comparison Positioning with Other Optical Brighteners
| Comparison Item | KSN | FP-127 | OB | KCB |
|---|---|---|---|---|
| Melting Point | ≥295℃ | 219-221℃ | 198-203℃ | 210-212℃ |
| Weather Resistance | Excellent (Level 8) | Moderate | Good | Excellent |
| Core Application | Engineering plastics, polyester fibers | Flexible PVC products | Polyolefins, coatings | EVA foam, outdoor use |
| Applicable Temperature | Highest (engineering plastics) | Moderate | Moderate | Moderate |
| Typical Scenario | High-temperature processing, long-term outdoor use | Indoor PVC products | General use, coatings | High-end foam |
One-sentence summary: Optical Brightener KSN is the first choice for scenarios with the highest requirements for high-temperature resistance and weather resistance, making it particularly suitable for high-temperature processing of engineering plastics (PET, PC, ABS, etc.) and polyester fibers, as well as products requiring long-term outdoor use.
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