Aliphatic Hardener, Biuret
Biuret isocyanate is based on HDI and has a structure where two isocyanate groups combine to form a biuret ring. Biuret structure, often used in wood, elastomers, flexible foams and other applications
Biuret isocyanate hardeners have a more flexible structure compared to the Trimer type. Generally, it provides higher elasticity and better flexibility properties. Isocyanate hardeners in biuret structure have a higher yellowing tendency than trimer type