To obtain a reactive hot-melt adhesive that keeps a long adhesion time after application, improves initial adhesive power, thereby prevents a strain adherend from separating and peeling, especially prevents an adherend in a working environment (atmosphere at 35°C) in the summer from separating and peeling, extremely shortens a curing time before the cutting work of a bonded body and does not contaminate a working environment and to provide a method for purifying a polyether, which has increased productivity and reduces an amount of an adsorbent used.
The reactive hot-melt adhesive comprises a urethane prepolymer (A) obtained by reacting a polyisocyanate (a) with a polyol (b) and a rosin (c) containing active hydrogen to be reacted with an isocyanate and a thermoplastic elastomer (D) as essential components.
KAWAKAMI TAKANORI
IWAWAKI EIJI
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