Synocat® PMDETA ( Pentamethyldiethylenetriamine ) is a colorless to light yellow clear liquid and easily soluble in water. It is a highly active catalyst for polyurethane reaction. It mainly catalyzes the foaming reaction and is also used to balance the overall foaming and gelation. Reaction, widely used in all kinds of polyurethane rigid foam, including polyisocyanurate board rigid foam.