| 摘要 |
PROBLEM TO BE SOLVED: To obtain a hot-melt adhesive capable of reducing a melt viscosity without impairing essential adhesion performances which the hot-melt adhesive has, improving operability, useful for multipurpose uses. SOLUTION: This hot-melt adhesive comprises a resin composition having formed a heat reversible crosslinking bond in a carboxyl group by reacting a polyester resin composed of a structural unit free from a reactive unsaturated bond, containing a carboxyl group or a carboxyl group-containing polyester- based urethane resin with a basic metal compound.
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