Applicable Base Polymer Properties
The water-dispersible polyesters are branched, amorphous materials comprised of difunctional acids and various glycols. Their water-dispersibility is due to the presence of pendent sodiosulfo groups randomly distributed along the polymer backbone. The unique properties of the new 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.