Synthesis of some polyimides by different methods

In this work the polyimides were prepared as thermally stable polymers by different ways. In order to perform the above mentioned project the following outlines are classified: 1. A- Preparation of a number of new N-substituted maleamic acids. B~ Dehydration of above maleamic acids to their corresponding Nsubstilulcd maleimides. C- Polymerization of all the new maleimide monomers. 2. A- Preparation of N-substituted maleimides from reaction of maleimide with alkyl halides. B- Polymerization of N-alkyl substituted maleimide monomers. 3. A- Polymerization of maleimide compound free radically by using AIBN as initiator