[CAS NO. ]

7128-64-5

[C.I. NO. ]

184

[Ingredients]

2,5-bis(5-tertbutyl-2-benzoxazolyl)thiophene

[Properties]

Appearance：light yellow or milk white powder

Purity: ≥ 99.0 %

Melting point: 201-202℃

[Characteristics]

Optical brightener OB is a kind of benzoxazole compound. lt is odorless, hard to dissolve in water, soluble in paraffin, fat, mineral oil, wax and common organic solvents. It can be used for whitening thermoplastic plastics, PVC, PS, PE, PP, ABS, Acetate fiber, paint, coating, printing ink, etc. It can be added at any stage in the process of whitening the polymers and make the finished products emit a bright bluish white glaze. It can also be used as special marks in identify fakeless material if used in printing ink.

[Application]

Thoroughly dispersed in all those polymers.If any ultral violet spectrum absorption agent is used in the polymers, the optimal dosage of optical brightener OB should be adjusted.

[Method of use]

PVC white  0.01-0.05% (10-50 g)   transparent  0.0001-0.001% (0.1-1 g)

PS  white  0.001% (about 1g )     transparent 0.0001-0.001% (0.1-1 g)

ABS natural color  0.01-0.05% (10-50 g)      white  0.01-0.05% (10-50 g)  

PE, PP colorless  0.0005-0.001% (0.5-1 g)    white  0.005-0.05% (5-50 g)  

Other plastic are like above

[Transport,Storage and Packing]

25kgs fiber drum

Should avoid sunlight and crash

Should be stored in cool, dry and ventilate place, and storage period should not exceed 2 years.