Patent ID: 6908981
Filing Date: 2005-06-21
Classification: B32B,C08G,C09J,Y10S

Abstract:
1. A laminate adhesive, consisting essentially of a polyisocyanate component and a polyol component consisting essentially of polyester polyol, wherein the polyester polyol consists essentially of an acid component and a polyhydric alcohol component, the acid component consisting of naphthalenedicarboxylic acid, and optionally a dimer acid and/or phthalic acid; wherein the laminate adhesive satisfies the following requirement: when a composite film is produced by coating opposed first and second surfaces of an aluminum foil having a thickness of 9 μm with the laminate adhesive in an amount of 2.5 g/m when cyclic ester compounds eluted from the laminate adhesive are measured by forming a bag from the composite film, filling the bag with ion-exchange distilled water in an amount of 0.5 mL/cm wherein the cyclic ester compounds are present at a concentration of 0.5 ppb or less per 0.5 mL/cm