Optical brightener OB
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fluorescent brightener ob
optical brightener ob
Fluorescent Brightener OB(FBA184)
Appearance : light yellow or milk white powder
Structure : a compound of benzoxazole type
Melting point : 200-2020C
Solubility : hardly soluble in water, but soluble in paraffins, mineral oils and ordinary organic solvents.
OB can be used for whitening thermoplastic plastics, PVC, PS, PE, PP, ABS, Acetate fibre, paint, coating, printing ink, etc. . It can be added at any stage in process for process for whitening the polymers and can give the finished products a bright bluish white glaze.
3. Directions for use and dosage:
The dosage should be 0.01-0.05% on weight of plastic. Put whitening Agent OB into plastic pellets, mix the mixture thoroughly and then carry out shaping. Fluorescent brightener Agent OB is similar to Uvitex OB made in foreign country.
4. Packaging and storing:
Cardboard drum,25kg or 20kg each. Stored in dry and ventilated place
5. Other information:
Product Name : 2.5-bis(5-tert. buty1-2-benzoxazolyl) thiophene
Molecular Formula : C26H26SO2N2
Molecular Weight : 430