| abstract |
The present invention provides a battery packaging material which has excellent moldability and is free from interlayers even after thermal fusion of sealant layers to seal battery elements and after a long-term durability test under high temperature and high humidity. The adhesive strength decreases, and there is no poor appearance such as floating between layers. An adhesive for packaging materials for batteries, a packaging material for batteries using the adhesive, a container for batteries, and a battery, wherein the adhesive for packaging materials for batteries is a polyol composition (A) and a polyisocyanate Composition (B) is an essential component of the adhesive for battery packaging materials, wherein the polyol composition (A) contains a polyester polyol derived from a polybasic acid or a derivative thereof The polyester polyol in which the raw material and the polyol are essential raw materials, all the raw materials of the polybasic acid or its derivatives are polybasic acids or derivatives having an aromatic ring, and the number average molecular weight is in the range of 3,000 to 100,000. |