Acrylic-styrene emulsion polymer designed for general use decorative coatings. Paints based on PRIMAL AS-355A Emulsion offer excellent adhesion, efflorescence resistance and water resistance properties over masonry substrates. Excellent choice for sheen to flat formulations requiring high scrub resistance. APEO-free(1) and does not have added formaldehyde or formaldehyde generators (2) and no ammonia odor(3). Facilitates the formulation of paints to address stringent environmental standards.