| 摘要 |
Novel aqueous polyurethane dispersions and shaped three dimensional articles formed therefrom are provided. The aqueous polyurethane dispersions are provided in solvent-free systems of a prepolymer comprising at least one polyether, polyester, or polycarbonate polyol, a mixture of MDI isomers, and a diol. The shaped articles from such dispersions can be heat-activated for bonding, lamination, and adhesion of substrates, including stretch fabrics.
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