Detailed Description:
Optical Brightener OB-1 (2,2′-(1,2-ethenediyl)bis(5-tert-butylbenzoxazole)) is a heat-resistant and non-discoloring brightening agent that enhances the appearance of materials by converting invisible ultraviolet light into visible blue light, giving products a brighter and cleaner look.

It is widely used in the production of polyester, nylon, PVC, PP, PS, ABS, and other engineering plastics, as well as in recycled plastic applications to mask yellowing and dullness. OB-1 offers excellent thermal stability, making it suitable for high-temperature processing environments. Its strong brightening effect, combined with durability and compatibility with multiple resins, ensures a lasting whitening performance

Technical Specifications:
• Chemical Name: 2,2′-(1,2-ethenediyl)bis(5-tert-butylbenzoxazole)
• Appearance: Yellowish-green crystalline powder
• Molecular Formula: C28H18N2O2
• Molecular Weight: 414
• Melting Point: 350°C (approx.)
• Solubility: Insoluble in water, soluble in organic solvents
• Applications:
   o Polyester, Nylon, and Engineering Plastics
   o PVC, PP, PS, ABS Resins
   o Recycled Plastic Brightening
   o Fiber and Textile Brightening