It was not long before Atlas came to the attention of WACKER as a potential customer. “At that time, Atlas was an ambitious producer of building materials that insisted on high quality and the latest technology from the beginning,” recalls Dariusz Biesiekierski, sales manager at WACKER. For its part, too, Atlas was interested because it realized immediately that VINNAPAS® polymer binder was a winner. Shortly after, in 1993, WACKER dispatched its first truck-load of redispersible polymer powder to Łódź. Thus began a trusting collaboration that has endured to this day. “Our premise was always that the Polish tile adhesive must be just as good as, if not better than, the imported product. And it still is today,” says Atlas board member Dr. Michalak.
One reason for this is surely the dispersible polymer powder which it contains. It takes no more than four percent VINNAPAS® in the mortar for a stable bond to be formed between the tile and the wall. The vinyl acetate and ethylene co-polymers contained in the VINNAPAS® impart flexibility to the otherwise rather brittle mortar, enabling the hardened building material to absorb minor stresses that arise between the substrate and the tile. “That enhances the bond between tile, mortar and substrate,” explains Dr. Schneider.
Polymer-modified dry-mix mortars also exhibit better water retention – they are easier to process and will not dry out so quickly. This property, in union with those of the polymer, improves the mechanical properties of the hardened product, namely greater load-bearing strength and abrasion resistance.