Synthesis and properties of linear polyborazoles. Part II. Condensation of B-dichloro-N-tri-(2,6-dimethylphenyl)borazole and aromatic and heterocyclic diamines

Abstract

The linear polymerisation of B-dichloro-N-tri-(2,6-dimethylphenyl)borazole through the aromatic diamines, m- and p-phenylenediamine,p,p′-diaminodiphenylmethane, and benzidine, and the heterocyclic diamines, piperazine and ammeline, has been investigated and the range and degree of plasticity, stability in air, and hydrolytic and thermal stability of the linear polyborazoles formed have been compared and related to their structure and degree of polymerisation.