NOVELTY - A polyurethane adhesive contains main component and hardening agent. The main component contains acrylic polyol (A) having number average molecular weight of 10000-100000, and hydroxyl value of 1-53 mg potassium hydroxide/g. The equivalence ratio of isocyanate group derived from aromatic polyisocyanate (B) contained in hardening agent to the hydroxyl group derived from acrylic polyol (A) is 10-30.    USE - Polyurethane adhesive is used for battery packaging materials used for forming containers of batteries (all claimed) e.g. secondary batteries and lithium ion batteries. Can also be used for joining multilayer laminated material comprising plastic raw material and metal type raw material, outdoor industrial use laminates e.g. buildings, barrier material, roof material, solar cell panel material, window material, outdoor flooring material, illumination protective material, motor vehicle components, etc.    ADVANTAGE - The polyurethane adhesive provides battery packaging material with excellent moldability, and interlayer adhesive strength, without producing fracture of film at the time of molding and generating float in molding portion. The packaging material provides battery having excellent reliability.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) battery packaging material, which has outer layer-side resin film layer (11), outer layer-side adhesive bond layer (12) formed using polyurethane adhesive, metal foil layer (13), inner layer-side adhesive bond layer (14) and heat-sealing layer (15), provided in order on outer layer; and    (2) battery container, which consists of outer layer-side resin film layer having convex surface, and heat-sealing layer having concave surface.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the battery packaging material.    Outer layer-side resin film layer (11)    Outer layer-side adhesive bond layer (12)    Metal foil layer (13)    Inner layer-side adhesive bond layer (14)    Heat-sealing layer (15)