| 摘要 |
PROBLEM TO BE SOLVED: To provide a reactive not melt adhesive which has good workability, exhibits a superior initial adhesive strength, and gives superior mechanical strengths and heat resistance after a moisture cure. SOLUTION: The reactive hot melt adhesive contains as the major component a urethane prepolymer having an isocyanate group on the terminals, which is obtained by using a polyol component-which contains (1) a polyester polyol obtained from an acid component containing succinic acid as a major component and a diol and (2) a polyester polyol obtained from an acid component containing adipic acid as a major component and a diol and/or a polyester polyol obtained from an acid component containing phthalic acid as a major component and a diol and in which the polyester polyol (2) has a melting point lower than that of the polyester polyol (1) and (3) a polyisocyanate. COPYRIGHT: (C)2004,JPO
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