ALIPHATIC AROMATIC COPOLYESTER THERMOSET ADHESIVES - SYNTHESIS AND CHARACTERIZATION/

In this paper, the synthesis and characterization of a new family of a liphatic/aromatic copolyester resins is described. This new resin is d erived from a two component oligomeric system consisting of a mixture of Novolac acetates and several specially designed oligomers with carb oxylic acid end groups. In this new material, aliphatic units have bee n incorporated into the oligomers in order to reduce the processing te mperature. When used as an adhesive, the new resin offers good lap she ar strength of about 14 MPa (2000 psi) at room temperature and retains useful properties to 80 degrees C-100 degrees C. This new system prov ides good thermal stability, environmental resistance and char yield o f 25-40%.