Urethane adhesive composition

Abstract

A two-liquid type urethane adhesive composition includes a main agent and a curing agent. The main agent includes a poly isocyanate component, and the isocyanate group content in the main agent is 5 mass % or more of the total amount. The curing agent contains a compound having a plurality of active hydrogen-containing groups per molecule, and the compound having a plurality of active hydrogen-containing groups per molecule includes a high molecular weight polyol having two or three hydroxyl groups per molecule and a number average molecular weight of 1800 or greater, a low molecular weight polyol A having two hydroxyl groups per molecule and a number average molecular weight of 200 or less, and a low molecular weight polyol B having three hydroxyl groups per molecule, with at least one of the three hydroxyl groups being secondary hydroxyl groups, and a number average molecular weight of 1200 or less.

Dependencies are inferred from the claim text.