Maleimide modified epoxy compound was prepared by reacting copolymer of Acrylic acid (AA) of N-[(4-acetyl)phenyl]maleimide (APMI) maleimide APMI-co-AA with epichlorohydrin in presence of Triethylamine (TEA). The resulting compound possessed both the oxirane ring and maleimide group. Synthesized epoxy maleimide resins characterized by FT-IR, 1H-NMR spectroscopy. Thermal stability of uncured resins was evaluated by TGA and DSC analysis. Glass fiber reinforced composites was also prepared and their chemical and mechanical properties were checked out. Resultant cured sample have good thermal stability, chemical resistance (acid/alkali/solvent) and water absorption resistance properties.