| abstract |
The present invention provides (a) at least one bifunctional polyester polyol having a number-average molecular weight of 400 to 5000 g/mol, (b) at least one number-average molecular weight of 62 to 399 g/mol. at least one polyurethane-polyurea polymer formed from a difunctional polyol component having, (c) at least one diisocyanate, and (d) at least one, optionally at least one, chain extender having at least one ionic group. of an aqueous dispersion, the aqueous dispersion is applied to at least one of the substrates to be bonded, and the dispersion present on the at least one substrate is subsequently dried to obtain at least one adhesive layer, It relates to the use for bonding at least two substrates by contacting at least one adhesive layer with a further substrate or an adhesive layer present on the further substrate at a pressure and a temperature of less than 40° C., wherein the polyurethane-poly after drying The urea polymer has a glass transition temperature Tg of −65 to 10° C. and a melting point of 40 to 80° C., and a corresponding method for bonding at least two substrates, and obtained in this way and obtained in this way and between at least two substrates and between the two substrates. It relates to an adhesive composite comprising an adhesive layer present in each. |