Patent ID: 8716427

Claim:
A two-component curable solventless adhesive consisting of a base resin and a curing agent, wherein the base resin contains a polyol having an acid group, a secondary or tertiary terminal hydroxyl group accounts for 30% or more of the entire terminal hydroxyl groups of the polyol, and 0.3 mol % or more and below 20 mol % of the entire terminal hydroxyl groups of the polyol is modified with a trimellitic anhydride, and the curing agent contains an isocyanate group-terminated urethane prepolymer obtained by reaction of a raw polyisocyanate containing at least an aralkyl polyisocyanate and/or a modified substance thereof with a macropolyol having a number average molecular weight of 400 to 5000, and a content of a low molecular weight polyisocyanate having a molecular weight of 190 or less is 3% by weight or less, and a value calculated from the following formula (1) is 10 or more and 30 or less: ( Acid ⁢ ⁢ equivalent ⁢ ⁢ of ⁢ base ⁢ ⁢ resin ) ⁢ × ( Amount ⁢ ⁢ of ⁢ ⁢ curing ⁢ ⁢ agent ( parts ⁢ ⁢ by ⁢ ⁢ weight ) ) ( Isocyanate ⁢ ⁢ equivalent ⁢ ⁢ of curing ⁢ ⁢ agent ) × ( Amount ⁢ ⁢ of ⁢ ⁢ base ⁢ ⁢ resin ( parts ⁢ ⁢ by ⁢ ⁢ weight ) ) . ( 1 )