Tri-iso distributes a wide range of aromatic polyamines that allow formulators to produce high quality polyureas.  Polyamines contain reactive amine (NH) groups which react with isocyanate (NCO) groups on isocyanates to form polyureas.  Primary aromatic diamines react much faster than secondary diamines, and significantly faster than sterically-hindered secondary diamines.  

 
Primary Aromatic Diamines Products