KOSTER American Corporation Single Component Polyurethane Prepolymer Used With 10% Catalyst. The System Reacts When Coming Into Contact With Water And Forms Spontaneously A Solid Waterproof Polyurethane Foam Koster IN 1

KB-PUR® IN 1 is a water reactive polyurethane. When the material comes into contact with water, it reacts to form a waterproof polyurethane elastic foam. Under dry conditions it reacts to form a solid elastic resin. KOSTER KB-PUR® IN 1 is solvent and filler-free, resistant to hydrolysis and is suitable for use in potable water areas. When the mixed material comes into contact with water it expands to form a fine-pored, dense-cellular foam, stopping and displacing the water.