POLYURETHANE ADHESIVE COMPOSITION AND COATED PRODUCT USING THE COMPOSITION

摘要

PROBLEM TO BE SOLVED: To obtain a polyurethane adhesive composition capable of providing coated products having sufficient repeatability by mixing a polyfunctional isocyanate compound with polyurethane polyol obtained using two kinds of catalysts. SOLUTION: This adhesive composition comprises (A) a polyurethane polyol containing hydroxyl groups at the terminals and obtained by reacting a polyester polyol and a polyether polyol with an organic polyisocyanate in the presence of two kinds of catalysts, and (B) a polyfunctional isocyanate compound. At least one of two kinds of the catalysts is preferably an organic metal compound such as an organic tin compound. The combination of two kinds of the catalysts is preferably a tin-based catalyst/tin-based catalyst combination, more preferably a 2-ethylhexanoic acid tin salt/dibutyl tin dilaurate combination in a weight ratio of <1. Thereby, the colorless and transparent adhesive having a high cohesive force and hardly leaving the adhesive when peeled can be provided.