Used as a crosslinking agent in polymer formulations, particularly in water-based coatings, adhesives, and textile finishes. Enhances film formation, water resistance, and durability of the final product. Commonly applied in emulsion polymers where covalent bonding between polymer chains improves mechanical and chemical stability. Also utilized in the synthesis of functional polymers for specialty papers and nonwoven materials. Its reactivity allows for easy incorporation into acrylic copolymers during emulsion polymerization processes.