Moisture-curing polyurethane prepolymer with reduced residual monomer content

摘要

The present invention Excellent instantaneous fixation of the reactive hot-melt adhesive, excellent operability of the moisture-curing reactive adhesive, combines the contradictory nature of both the novel reactive hot melt and are foaming suppressed to reduce the amount of residual monomers to provide a pre-polymer for the pressure-sensitive adhesive. Furthermore, providing a novel process for the preparation of the prepolymer. Further, the method of producing the prepolymer, as well as the joining method. A obtained by reacting with the novel prepolymer range of liquid at diisocyanate and room temperature liquid at room temperature diol, the NCO group / OH group of 2.2 / 1 to 1.2 / 1 by using the is a prepolymer, the number range of the average molecular weight (Mn) 1,500 80,000, range viscosity of 1,000~200,000mP s at 120 , and a prepolymer having a high adhesive force at ordinary temperature It is achieved by using a.FIELD 1