Using Aliphatic Isocyanates to build prepolymers

Polyurethane bonds are made from the reaction between an isocyanate (NCO) and chemicals containing active hydrogens (OH, COOH etc.). The choice of raw material is very large, enabling many combinations with a wide variety of properties. Figure 1: Reaction to form polyurethane By preparing customized prepolymers, the adhesive stiffness, elasticity and crosslinking properties can be tailored to suit specific needs. Among properties that can be adjusted, viscosity is a key parameter to consider. Both solvent-based and waterborne ready-to-use type of products offer a wide range of viscosity to meet your application needs. These prepolymers will be used as ready-to-use component to form the polyurethane chain with the whole range of properties needed in adhesive applications.