Applicable Base Polymer Properties
The water-dispersible polyester in this formulation is a branched, amorphous material comprised of difunctional acid and glycol. Their water-dispersibility is due to the presence of pendent sodiosulfo groups randomly distributed along the polymer backbone, and this characteristic makes the adhesive highly suitable for paper repulping processes.
The unique properties of the polyester are derived from a branched architecture and a specific combination of monomers resulting in a low Tg and enhanced compatibility with other resins. The low Tg provides, in part, the means by which water-dispersibility is readily obtained at or below room temperature. The branched structure of the polyester results in low melt viscosity profiles that are required for hot-melt adhesive formulations.