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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. This paper discusses the preparation of these copolymers and presents extensive data on T", heat distortion temperatures, thermal stability, and melt viscosity. 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.

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Electrification of automotive systems presents significant opportunities for improvements in cooling system efficiency and performance. This paper describes an effort to develop an analytic platform for Hanon Systems to evaluate the electrification potential for powertrain cooling systems. The paper describes the development of a baseline diesel cooling system model based on the Ford 6.7L Power Stroke diesel. A variant of the system with electric pumps is also modeled. Performance of the baseline conventional and electric pump system are compared on a typical automotive drive cycle to quantify potential benefits of the electric pump system and advanced controls.