Thermally stable reactive hot melt urethane adhesive composition having a thermoplastic polymer, a compatible, curing urethane polyalkylene polyol pre-polymer and a tackifying agent.

摘要

Hot melt adhesive compositions combining the characteristics of hot melt adhesives and reactive adhesives can be prepared by blending a thermoplastic polymer, having sufficient structural integrity to provide cohesive strength, with a urethane prepolymer and a tackifying agent. The composition has sufficient green strength to form initial bonds. Additionally, over time, the composition cures to a final rigid, resilient structural adhesive bond.