An adhesive with which a battery packaging material capable of maintaining a strong adhesive strength even after a long-term endurance test and having an excellent moldability can be formed is provided. A polyurethane adhesive for a battery packaging material according to the present invention includes a main agent and a curing agent, in which the main agent contains an acrylic polyol (A) having a number-average molecular weight of 10,000 to 100,000 and a hydroxyl value of 1 to 100 mgKOH/g, and an equivalent ratio [NCO]/[OH] of an isocyanate group derived from an aromatic polyisocyanate (B) contained in the curing agent to a hydroxyl group derived from the acrylic polyol (A) is 10 to 30.
提供了一种粘合剂,可以形成具有良好可塑性并能够在长期耐久性测试后保持强大粘合强度的电池包装材料。根据本发明的电池包装材料用聚
氨酯粘合剂包括主剂和固化剂,其中主剂包含分子量为10,000至100,000,羟值为1至100mgKOH/g的
丙烯酸型聚醇(A),并且源自含有芳香族多
异氰酸酯(B)的异
氰酸基与
丙烯酸型聚醇(A)的羟基之间的当量比[NCO]/[OH]为10至30。