Fluorescent Whitening Agents / Optical Brighteners

Fluorescent Whitening Agents / Optical Brighteners impart excellent light stability, and the ability to serve as authentication markers. Used in packaging adhesives, paper bonding, and security applications, where their distinctive fluorescence under UV illumination provides functional benefits. 

Sub-types include stilbene derivatives for general applications, coumarin-based brighteners for enhanced light stability, benzoxazole compounds offering excellent heat resistance, and specialized grades for improved antimicrobial properties or enhanced solubility in specific systems. Recent innovations focus on encapsulated brighteners that offer improved compatibility and the development of more environmentally compatible brighteners with improved stability.