Polyurethane Foam with Aqueous Polymer Dispersion

A method for forming a polyurethane foam that has a resiliency greater than 20% as measured according to ASTM D 3574, the method comprising:

• preparing an isocyanate-reactive component by mixing at least a polyol component, an additive component, and a preformed aqueous dispersion, the resultant mixture including:
• from 50.0 wt % to 99.8 wt % of a polyol component, based on the total weight of the mixture, the polyol component including at least one polyether polyol,
• from 0.1 wt % to 50.0 wt % of an additive component, based on the total weight of the mixture, that includes at least one catalyst and at least one surfactant, and
• from 0.1 wt % to 6.0 wt % of a preformed aqueous polymer dispersion, based on the total weight of the mixture, the preformed aqueous polymer dispersion having a solids content from 10 wt % to 80 wt % based on the total weight of the preformed aqueous polymer dispersion and being one of an aqueous acid polymer dispersion or an aqueous acid-modified polyolefin polymer dispersion in which the polyolefin is derived from at least one C2 to C20 alpha-olefin;
• providing an isocyanate component that includes at least one isocyanate such that an isocyanate index of the reaction system is from 70 to 150;
• and
• allowing the isocyanate component to react with the isocyanate-reactive component to form the polyurethane foam.