Optical brightener KSN
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Fluorescent Brightener KSN(FBA368)
Appearance : Bright yellow crystalline powder
Melting point : 2950Cmin
Solubility : Insoluble in water, but soluble in high boiling point organic solvents such as phenyl-chloride.
Structure : a compound of diphenylethylene bisbenzoxazole type .
Fluorescent brightener agent KSN's chemical structure is similar to fluorescent brightener agent OB-1's but has much better whitening effects than OB-1 on polyester fibres and plastics, its compatibility with plastics is better than OB-1's too, highly whitening effects is available with only small dosage, KSN has a good resistance to high temperature as well as excellent resistance to light and weather. Applied to whiten polyester, polyamide and polycarylonitrile fibres, used in film, plastic pressing & injection process too. Suitable for whitening high polymers and could be added at any point during synthesizing
3. Directions for use and dosage:
The dosage should be 0.01-0.05% on weight of plastic or polyester granules. Mix the materials thoroughly before shaping of the plastic products or drawing-spinning of polyester
4. Packaging and storing:
Cardboard drum, 25kg or 20kg each. Stored in dry and ventilated place5.
5. Other information:
Product Name : 4.4-bis(5-methyl-2-benzoxoazol) -ethlene
Molecular Formula : C30H22N2O2
Molecular Weight : 442