Title

TRIMERIZATION OF ARYL CYANATES THERMALLY CURABLE OLIGOMERS

Date of Completion

January 1984

Keywords

Chemistry, Polymer

Degree

Ph.D.

Abstract

Aryl cyanates have been used as reactive terminal groups for crosslinking oligomers. With heat, aryl cyanates trimerize to thermally stable aryloxy - s-triazine rings via an additional reaction. Addition reactions have an advantage over condensation reactions in that they do not produce volatile by-products. We have explored the feasibility of using aryl cyanates to crosslink polycarbonate oligomers of increasing molecular weight. We have also investigated the nature of the trimerization reaction itself and what factors promote and retard its rate. The thermal and mechanical behavior of the reactive oligomers and crosslinked polymers therefrom, are described. ^