SPUR+ 3100HM prepolymer and SPUR+ 3200HM prepolymer silylated-polyurethane resins

SPUR+ 3100HM prepolymer and SPUR+ 3200HM prepolymer silylated-polyurethane resins are high-performance, low-viscosity binding agents that impart high tensile strength to structural adhesives. They function without requiring primers for most substrates, and can be applied in both one- and two-part adhesive formulations. These additives provide excellent water and chemical resistance, as well as high thermal resistance. Their shelf life is about 12 months, and they are formulated without plasticizers and contain no free isocyanites. When cured alone, the SPUR+ 3100HM prepolymer has a tensile strength of 450 psi and a Shore A hardness of 40. The SPUR+ 3200HM prepolymer is designed for the most demanding applications, and can offer 1,000-psi tensile strength with a Shore A hardness of 60.