The paint and surface coatings industry continues to be influenced by sustained environmental pressures, in particular the reduction or elimination of volatile organic compounds (VOCs). This in turn has further accelerated the growth of waterborne formulations. Not only has the move been away from solvent to water-based coatings, but there has also been environmental pressure to eliminate coalescing solvents and glycol-based freeze-thaw stabilizers from established emulsion paints. In some instances this has led formulators to consider total reformulation of their copolymers in order to retain or optimize the film-forming properties of their paint in the absence of such additives. At the same time renewed interest has been observed in the development of water-based emulsions of high performance, film-forming resins such as alkyds, epoxies, polyesters and polyurethanes. This present symposium attempts to outline the further developments that have occurred in waterborne polymers and additives in the past six years. The development of anti-pollution legislation is presented and a range of water-based resins and their end-use applications are considered in depth. These include metal treatment, concrete and textile applications. Cross-linking mechanisms are also reviewed and specific papers consider amino resins, waterborne radcure coatings and water-based urethanes. The latter half of the proceedings considers a range of additives currently used in the manufacture and formulation of aqueous systems. These include biocides and foam control agents, acetylenic and polymeric surfactants, clay rheology modifiers, driers and metallic pigments. The subject of water-based coatings and the many additives used in their formulation is too broad to cover in a single volume. However, the editors hope that this monograph will prove to be a useful addition to current literature on this topic, suitable for both readers relatively new to the field and experienced workers in the coatings industry.
