| 摘要 |
<p>Disclosed is a moisture-curable hot melt adhesive that has an excellence balance in terms of environmental aspects, component compatibility, initial adhesion strength, heat resistance after moisture curing, and tack-free time, etc., further disclosed is a method for manufacturing said hot melt adhesive. This moisture-curable hot melt adhesive includes a urethane prepolymer having an isocyanate group on a terminal, and achieves the aforementioned excellent balance by including (A) a urethane modified rosin, with the residual ratio of the isocyanate compound being 5.0 mass% or less, and a heat-resistant softening temperature of 60°C or higher after moisture curing. The (A) urethane modified rosin can be obtained by a reaction between an isocyanate compound and a rosin derivative having a hydroxyl group, and the moisture-curable hot melt adhesive can be manufactured by mixing the (A) urethane modified rosin, polyol, and an isocyanate compound. This adhesive is particularly useful, for example, as a building material, an electronic material, or in the field of automobiles.</p> |
