NOVEL TERPOLYMERS - POLY(KETO-AMINE-UREAS)

Thermally stable polymers containing keto-amine-urea groups have been prepared by condensation of keto-amino group containing diamine and va rious diisocyanates. The resulting polymer samples have been character ised by elemental analysis, IR spectra, Mn estimated by non-aqueous co nductometric titration and thermogravimetry. Curing of commercial epox y resin-DGEBA by employing these polymers scanned on Differential Scan ning Colorimeter (DSC). The glass fibre reinforced composites (i.e. la minates) based on such terpolymer-epoxy resin system have also been pr epared and characterised.