The synthesis, characterisation and thermal behaviour of functionalised aryl cyanate ester monomers

Abstract

The syntheses of several functionalised aryl cyanate esters bearing reactive allyl groups are presented. The monomers were purified (to c. 98%) using preparative HPLC and a range of techniques, including heteronuclear nuclear magnetic resonance (NMR) spectroscopy, was employed in their characterisation. A model functionalised aryl cyanate ester was doped with a variety of additives and the resulting thermal behaviour examined using dynamic differential scanning calorimetry (DSC). Furthermore, the postulated co‐reaction of the model functionalised cyanate ester with bis‐maleimides was investigated using heteronuclear NMR and dynamic mechanical techniques. Copyright © 1992 Society of Chemical Industry