Synthesis of Styrene/Maleimide Copolymers and Physical Properties Thereof

A series of carefully prepared copolymers of styrene and maleic anhydride (S/MA) have been reacted with ammonia and converted to their respective styrene/maleimide (S/MI) derivatives. The preparation of these copolymers is discussed and extensive data on T sub g , heat distortion temperatures, thermal stability, and melt viscosity are presented. Some physical property data are also presented. Some new S/MA data concerning solubility parameter, density, coefficient of expansion, refractive index, and physical properties are also included and used for comparison. 4 ref.--AA