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Chemical name] 2,5'-Bis[2-(5-tert-butyl benzoxazolyl-2'-)thiophene

[Molecular weight]  430

[Structural formula]

[Formula] C26H26N2O2S

[Appearance] slight greenish yellow powder

[Structure] a compound of benzoxazole type

[Melting point] 200℃-202℃

[Solubility] hardly soluble in water,but soluble in paraffins,mineral oils and ordinary organic solvents.

[Specifications]

[Applications]

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.

[Package]

 Paper drum lined with  plastics bags,net in 25kg.

[Handling&safety]

OB can be handled in accordance with the usual rules for industral chemicals.Avoid dust formation and ignition sources. Stored indry and cool place.