For polymer manufacturers, achieving a pristine white appearance is often a critical factor in product differentiation and market success. Optical Brightener OB-1 (CAS: 1533-45-5) stands out as a premier chemical additive designed to enhance the visual quality of plastics and synthetic materials. As a dedicated supplier of high-performance chemical intermediates, we provide this essential brightener to manufacturers seeking superior results.

The Science Behind OB-1's Brightness

Optical Brightener OB-1 functions by absorbing invisible ultraviolet (UV) radiation and re-emitting it as visible blue light. This phenomenon effectively neutralizes the natural yellow or off-white hues commonly found in polymers, leading to a significantly brighter and whiter appearance. Its chemical structure, a stilbene derivative containing benzoxazole rings, provides unique properties. With a molecular formula of C28H18N2O2 and a molecular weight of 414.45, OB-1 is characterized by its exceptional stability. Its high melting point (355-360°C) and low volatility make it an ideal candidate for polymers processed at elevated temperatures, ensuring that the brightening effect is maintained throughout the manufacturing process and in the final product.

Applications and Benefits for Polymer Producers

Our Optical Brightener OB-1 is an indispensable additive for various polymer types, contributing to both aesthetics and performance:

  • Improved Aesthetics: Achieves a brilliant, neutral white, enhancing the perceived quality and value of finished goods.
  • Combats Yellowing: Effectively counteracts inherent yellowing in polymers due to aging, heat, or processing.
  • Enhanced Color Intensity: Can also intensify certain colors by providing a brighter base.
  • Wide Compatibility: Works well with a broad spectrum of polymers including PP, PE, ABS, PS, HIPS, PA, PC, EVA, and rigid PVC.

As a trusted manufacturer and supplier from China, we are committed to providing high-purity OB-1 at competitive prices. This allows polymer manufacturers to buy essential additives without compromising their budget. Our product's excellent light fastness and stability ensure that the enhanced whiteness lasts, providing long-term value to your customers.

Why Choose Our OB-1?

When sourcing critical additives, reliability and quality are paramount. We are a dedicated manufacturer and supplier, ensuring consistent product specifications and a stable supply chain for Optical Brightener OB-1. By choosing us, you gain access to a product that not only meets but exceeds industry standards for whiteness and durability. For inquiries about purchasing Optical Brightener OB-1 or for a detailed price quote, please contact our sales team.