Aqueous polyurethane and polyurethane-urea dispersions, and process for the flocking of elastomeric mouldings using these dispersions

摘要

The invention relates to polyurethane and polyurethane-urea dispersions and to their use together with water-soluble, reactive melamine resin or epoxy resin precondensates for flocking elastomeric mouldings. The polyol component of the polyurethane- or polyurethane-urea dispersions comprises a relatively high-molecular-weight polycaprolactone-polyol or a mixture of a relatively high-molecular-weight polyester-polyol and a relatively high-molecular-weight polycaprolactone-polyol. The polymer structure contains free groups which are reactive towards reactive melamine resin or epoxy resin precondensates.