Albany, New York - Momentive Performance Materials introduced two new prepolymers for industrial adhesive formulations at the Adhesive and Sealants Council's 2008 Fall Convention & Expo in Baltimore, Maryland on 12 - 14 Oct.
SPUR 3100HM and SPUR 3200HM prepolymers will become part of Momentive's series of silyated polyurethane resins. "These high modulus prepolymers are excellent candidates to be considered 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," the company said.
"The latest generation of industrial adhesives is replacing or augmenting traditional mechanical fasteners across a number of industries, including transportation and construction," said Bruce Waldman, global marketing manager, SPUR Prepolmers.
The company said both prepolymers have a shelf life of around 12 months, contain no isocyanates and were formulated without plasticisers.
According to Momentive, test results showed that, "SPUR 3100HM, when cured alone, provided a tensile strength of 450psi and a Shore A hardness of 40." SPUR 3200HM is suitable for more demanding applications, potentially offering 1000psi tensile strength, around ten times greater than conventional prepolymers, with a Shore A hardness of 60, the company added,