Patent ID: 7240371

Claim:
A stretch article comprising: at least one adhesive film or tape of: a substantially solvent-free aqueous polyurethane dispersion of: (1) a prepolymer, which comprises: a) at least one polyether or polyester polyol, wherein said polyether or polyester polyol has a number average molecular weight of about 600 to about 3,500; b) a mixture of 4,4′-and 2,4′-methylene bis(phenyl isocyanate) (MDI) isomers, wherein the ratio of 4,4′-MDI to 2,4′-MDI isomers ranges from about 65:35 to about 35:65; and c) at least one dial compound comprising: hydroxy groups capable of reacting with the mixture of MDI isomers of component b) and at least one carboxylic acid group capable of forming a salt upon neutralization, wherein said at least one carboxylic acid group is incapable of reacting with the mixture of MDI isomers of component b); (2) at least one neutralizing agent to form an ionic salt with the at least one diol compound; and (3) at least one monofunctional dialkyl amine compound as a blocking agent for isocyanate groups; and a substrate to which said adhesive film or tape is applied, wherein the adhesive film or tape is applied to the substrate upon release from a release paper.