Optical Brightening Ob1 Agent, Color : Yellow, Form : Powder

Optical Brightener OB-1 is a high-performance fluorescent whitening agent widely used in plastics, synthetic fibers, coatings, and resins. It absorbs ultraviolet (UV) light and re-emits it as visible blue light, giving materials a brighter, whiter, and cleaner appearance.

Key Features

• Excellent Whitening Effect: Enhances brightness and whiteness of finished products

• High Thermal Stability: Suitable for high-temperature processing

• Good Lightfastness: Resistant to UV degradation and yellowing

• Low Volatility: Minimal loss during processing

• High Compatibility: Works well with a wide range of polymers and resins

• Low Dosage Required: Effective even at very small concentrations

Typical Applications

✔ Plastics: PVC, PE, PP, PS, ABS, PET
✔ Synthetic fibers: Polyester, nylon
✔ Plastic masterbatches
✔ Coatings, paints & inks
✔ Adhesives & sealants
✔ Rubber and elastomers

Technical Highlights

• Appearance: Yellowish-green crystalline powder

• Chemical Class: Bisbenzoxazolyl derivative

• Solubility: Insoluble in water, soluble in organic solvents at high temperature

• Processing Temperature: Stable up to ~330°C