[Chemical name] 2, 5'-Bis[2-(5-tert-butyl benzoxazolyl-2'-)thiophene
[Molecular weight] 430
[Appearance] slight greenish yellow powder
[Structure] a compound of benzoxazole type
[Melting point] 200 -202 DEGREE
[Solubility] hardly soluble in water, but soluble in paraffins, mineral oils and ordinary organic solvents.
APPEARANCE Slight greenish yellow powder
MELTING POINT 200-202 DEGREE
OB can be used for whitening thermoplastic plastics, PVC, PS, PE, PP, ABS, Acetate fier, paint, coating, printing ink, etc...It can be added at any stage in prodess for process for shitening the polymers and can give the finished products a bright bluish white glaze.
[Directions for use and dosage]
The dosage shoule 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 whitening agent OB is similar to Uvitex OB made in foreign country.
Paper drum lined with plastics bags, net in 25kg.
OB can be handled in accordance with the usual rules for industral chemicals. Avoid dust formation and ignition sources. Stored indry and cool place.