Waterborne Acrylic Copolymer Emulsion – Excellent Adhesion & Salt Spray Resistance for Metal Primers & Topcoats WL-A1000 is a waterborne emulsion copolymerized from acrylate monomers. It exhibits excellent adhesion and outstanding resistance to water and salt spray. It is widely used in primers and topcoats for various metal substrates. Physical Properties Properties Units Values Appearance Milky white liquid Non-volatile content % 47 ± 1 Viscosity mPa*S 50~500 pH --- 7.0-9.0