Preparation and characterization of some polyesterurethanes and polyesterurethane-ureas based on 1,3-bis(carboxymethoxy)benzene

@inproceedings{Shaaban1988PreparationAC,
  title={Preparation and characterization of some polyesterurethanes and polyesterurethane-ureas based on 1,3-bis(carboxymethoxy)benzene},
  author={Aimen F. Shaaban and Maher Abd‐El‐Rahman El‐Safty and Hamed Y. Moustafa and Nagi N. Messiha},
  year={1988}
}
Hydroxy terminated polyesters were prepared by a melt condensation technique using 1,3-bis(carboxymethoxy)benzene and various diols. They were characterized by hydroxy number, acid number, and intrinsic viscosity measurements. The polyesters were reacted with excess toluene-2,4-diisocyanate to yield isocyanate terminated prepolymers which were subsequently reacted with diols or benzidine. These polymers were characterized by IR and 1H-NMR spectra, viscosity measurements, and thermogravimetric… CONTINUE READING