Preparation, Characterazation, and Thermal Properties of Newpoly (ester-imid)sderived from Poly condensation Reaction between Diimide-dicarboxylic Acid with Aromatic Diols

Abstract

Polymeric systems based on poly (ester-imide)s (PEIs) are high-performance material, which combines the useful
properties of polyester and polyimide resins. A chain of new poly(ester-imid) are obtained through polycondensation
between diimide-dicarboxylic acid( Prepared from reaction pyromellitic anhydride(PMDA) with diamine) with aromatic
diols such as Bis(2-bromo 4-hydroxy phenyl) cyclohexane (M1)and Bis(4-hydroxy phenyl)-2-hydroxy
phenyl)methane(M2) in the presence of dibutyltine dilaurate as Catalyst, The corresponding new poly(ester-imid) (PEIs)
thataregained in quantitative products are soluble in polar aprotic solvents, are ofhigh thermal stability. The structures of
the Monomers and poly(esters-imide) were confirmed by FTIR and 1HNMRspectroscopies.