HPG-130 Catalyst is a tertiary amine catalyst in a high solvency carrier designed for rigid and semi-flexible MDI based polyurethane resins. This catalyst has been formulated for improved flow characteristics, increased compatibility with water and better foam stability. HPG-130 Catalyst may be used at up to 5% on total polyurethane weight to form a stable and non-reacting mixture. Extreme care should be taken with catalysed polyurethane resin as the materials when mixed will become sensitive to any moisture source.