Converting to water-soluble organic varnishes makes environmental, economic, and processing sense

Types of water-based varnishes and their properties are described. They include inorganic solutions, inorganic dispersions, organic emulsions, organic dispersions, and organic solutions. The performance of these varnishes is examined. The three major types of organic water-soluble resins used as electrical insulating varnishes, namely alkyds, polyesters, and epoxies, are discussed, and guidelines for their use are given. It is shown that of all the water-based varnished available, water-soluble organic varnishes offer the best processing properties and lasting insulating value needed for the manufacture of electrical products. Inorganic solutions and dispersions, as well as organic emulsions and dispersions, all have drawbacks that preclude such use.<>