his paper deals with synthesis of mesogenic condensation monomer

bis- (3- methoxy - 4 -- hydroxybenzylidene ) -- 4

4' -- diimidobiphenyl (biphenol )

seven main chain thermotropic polyazomethine-- ethers made from biphenol and a

ω -dibromoalkane by phase -- transfer--catalysis polyetherification reaction are discussed.Ther structure have ho characterics by 1H--NMR

IR spectra and element analysis. The effect of alkali aqueous concentration on solubility has been investigated. The banded texture of oriented specimens remains almost unchanged dur-ing the melting transition but birefrngent weakens and the banded texture gradually disappears with increasing temperature.