“Thermal and hydrolytic stability of urethane resins”

Urethane resins in recent years have become accepted in the electrical field for use as wire enamels, conformal coatings, potting and encapsulating compounds. These resins are prepared through the reaction of a polyfunctional isocyanate with a polyfunctional hydroxyl (polyol) or amine containing compound. Since there are a number of isocyanates, polyols, or amines which can be used, the terms urethane or polyurethane must be considered as generic rather than specific.