Butala, D.Choi, Kyu Y.Fan, Michael K-H.Optimal open loop control strategies are developed for batch and semibatch free radical copolymerization of styrene and acrylonitrile using the interactive computer aided design (CAD) tool CONSOLE, which was developed at the University of Maryland in 1987. CONSOLE emphasizes control engineer's intuition and man- machine interaction and includes a classification of various design specifications. Conflict resolution among the different objectives is made by scaling of specification space based on designer's knowledge of the polymerization proceas. A feasible direction algorithm is used to obtain optimal monomer addition and reactor temperature policies.en-USTechnical Report