Optical Brightening Agent OB

Main composition  

Chemical Name    2,5-bis(5-tert-butyl benzoxazolyl-2'-)thiophene

Technical index  

 Performance and Features  

1. Tasteless, soluble in alkane, fat, mineral oil, paraffin and most organic solvents. The maximum absorption wavelength is 375nm (in ethanol) and the maximum emission wavelength is 435nm (in ethanol);

2. It has good whitening performance and thermal stability, less dosage and wide applications.

Mainly be used in whitening of thermoplastic, polyvinyl chloride (PVC), polypropylene (PP), polyester fiber, paint and ink, etc.

The dosage against raw materials by weight:

0.01～0.05% for PVC to improve whiteness

0.0001～0.001% for PVC to improve brightness

0.0001～0.001% for polystyrene

0.01～0.05% for ABS

0.0005～0.001% for colorless polyolefin　　

0.005～0.05% for white polyolefin

 Packaging and Storage  

Packaging with 25kg bag, 25kg carton, 500kg bag or according to customer's request.

Shelf-life: 2 years, store under the room temperature. Avoid strong sunlight and wet environment.