Optical Brightening Agent OB for Plastic and Ink

Physical & Chemical Properties

Appearance pale green powder
Tone blue white (similar to the standard substances)
Purity >=98%
Melting Point 198-203degree centigrade
Fineness >100mesh

Performance & Features

1. Pale green powder, tasteless, dissolvable in paraffin, fat, olefin and most organic solvents. Its spectrum can absorb the maximum wavelength of 375nm with the maximum transmitted length of 435nm(in ethanol).
2. Good brightening effects and weathering resistance requires a small quantity but can be widely used
Application Scope
OB is widely used in the brightening of thermoplastics as PVC, PE, PP, PS, ABS, PMMA, POM and thermosetting plastic, polyester fiber, paint, ink and coating.

Usage Mode (compared to the weight of plastic raw material)

Polyvinyl chloride brightening: 0.01-0.05% increase radiance: 0.0001-0.001%
Polystyrene 0.0001-0.05% ABS: 0.01-0.05%
Polyolefin colorless matrix: 0.0005-0.001% white matrix: 0.005-0.05%

Packing & Storage

Packed in 25kg*1 tanks, 5kg*2 paper boxes or 1kg(iron cases)*12 paper boxes at cool and dry places to be protected from light.