The book discusses proven and promising methods to achieve a compatibilization between the organic and inorganic phases in thermoset polymers such as polyurethanes, phenolic resins, polyesters and epoxies. Of particular importance to the polymer engineer are the chapters dealing with compatibilization agents such as maleic anhydride elastomers, hydroxyl or carboxylic acid functionalized copolymers or metallocenes that catalyze the reactive processing. This title is essential reading for materials scientists, polymer chemists, chemical industry, and chemical engineers.