Leading specialty materials company, Momentive Performance Materials has unveiled two breakthrough prepolymers -SPUR+ 3100HM prepolymer and SPUR+ 3200HM prepolymer-for industrial adhesives formulations. The new prepolymers will join company's highly successful SPUR+ family of silylated polyurethane resins and are characterized by high modulus for use as binding agents that can help formulators of structural adhesives achieve high tensile strength, without primers for most substrates, in both one- and two-part adhesive formulations. These prepolymers also exhibit high-performance, low viscosity which are formulated without plasticizers and contain no free isocyanates.
Shelf life of both products is approximately 12 months and test results showed that SPUR+ 3100HM prepolymer, when cured alone, provided a tensile strength of 450psi and Shore A hardness of 40. SPUR+ 3200HM prepolymer, may be considered for use in the most demanding applications, potentially offering 1,000psi tensile strength - approximately ten times greater than conventional prepolymers, with a Shore A hardness of 60. In addition, the products also show primerless adhesion to most substrates, outstanding water and chemical resistance and high thermal resistance offering production advantages to industrial adhesive formulators.
16-Oct-08 
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