Patent ID: 7166649

Claim:
A pressure sensitive adhesive (PSA) composition, which comprises the ultraviolet radiation (UV) cured reaction product of: (a) an acrylate end capped polyester-polyether-based urethane acrylate being reaction product of: (i) between about 50 and 90 wt-% of a polyester diol having a molecular weight ranging from about 500 to about 3200; (ii) between about 10 and 50 wt-% of a polyether polyol having a molecular weight ranging from about 1000 to about 6000; (iii) between about 1 and about 5 wt-% of a hydroxy-functional acrylate; and (iv) a polyisocyanate, wherein the reaction product contains no residual isocyanate groups; (b) one or more acrylate monomers; and (c) a UV photosensitizer.