| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure sensitive adhesive which is an urethane-based pressure sensitive adhesive which exhibits viscosity and elasticity required for achieving desirable balance of adhesive force, peeling adhesive force, and shear strength.SOLUTION: Provided is a non-silicone urethane-based adhesive which is prepared by polymerization of a reactive oligomer expressed by the formula X-A-B-A-X, which is transparent optically, has self-wet ability, and which can be freely removed. Adhesive articles including an optical adhesive article can be prepared using the non-silicone urethane-based adhesive. (X is an ethylene unsaturated group; B is a unit including no silicone; and A is an urethane coupling group.) |
