A low-formaldehyde, aqueous acrylic emulsion designed specifically as an overprint or letdown vehicle for adhesion to vinyl films and vinyl-coated substrates. The product offers excellent stain and solvent resistance, adhesion to vinyl, excellent plasticizer migration resistance, and excellent thermal color stability. To achieve optimum properties, the polymer is typically formulated with wetting agents, coalescents for film formation, and rheology modifiers for printability. Standard RHOPLEX E-1691 Emulsion contains low levels of formaldehyde (present in additives used in the polymerization of the emulsion). The additives, however, have been removed in the new version—RHOPLEX E-1691LF Emulsion—which has maximum formaldehyde level of 10 ppm.