Optical brightener OB-1
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Fluorescent Brightener OB-1(FBA393)
Appearance : bright yellow crystalline powder
Melting point : 357-3590C
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 OB-1 is especially suitable for shaping various kinds of plastics and their products under high temperature. It has an extra ideal whitening effect on polyester-cotton blend fabric. It can be used for whitening polyester melt. This whitening agent is similar to Whitex, SNK, Uvitex ERT and Eastobrite OB-1 made in foreign country.
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 draw in-spinning of polyester fibers.
4. Packaging and storing:
Cardboard drum, 25kg or 20kg each. Stored in dry and ventilated place.
5. Other information:
Product Name : 2.2'-(4.4'-diphenol vinyl) di-benzoxazol
Molecular Formula : C28H18N2O2
Molecular Weight : 414