POLYMER FILM HAVING MULTIPHASE FILM MORPHOLOGY

摘要

The invention relates to a polymer film having multiphase film morphology. Within a layer, the polymer film comprises regions of a first polymer and regions of a second polymer and is produced from an aqueous polymer dispersion, containing the two polymers in dispersed form and a tackifier. The glass transition temperature of the second polymer is greater than that of the first polymer and less than 20ºC. The concentration of the tackifier in the polymer film is greater in the regions of the first polymer than in the regions of the second polymer. The invention further relates to polymer dispersions for producing polymer films having multiphase film morphology and to uses as adhesives, coating agents or sealants, for example for producing self-adhesive paper labels.