URETHANE ADHESIVE COMPOSITION

摘要

Disclosed is a urethane adhesive composition comprising a first liquid and a second liquid. The first liquid is composed of a prepolymer obtained by reacting a polyisocyanate and a high-molecular-weight polyol (I), and at least one filler selected from talc and calcium carbonate, and contains not less than 20 parts by mass of talc, 0-40 parts by mass of calcium carbonate and not less than 10 parts by mass of zeolite per 100 parts by mass of the total of the polyisocyanate, the high-molecular-weight polyol (I) and the prepolymer. The second liquid contains a high-molecular-weight polyol (II) and a low-molecular-weight polyol. In this urethane adhesive composition, the ratio of the mole number of hydroxyl groups derived from the low-molecular-weight polyol relative to the total mole number of the hydroxyl groups derived from the high-molecular-weight polyol (I) and the high-molecular-weight polyol (II) is not less than 4.