Polysiloxanes having aromatic heterocyclic units. I. Polydimethylsiloxane benzimidazole polymer

Abstract

Abstract A polymer containing dimethylsiloxane units (35) and benzimidazole units (1) has been prepared by the condensation of 3,3′‐diaminobenzidine and an α,ω‐bis‐(γ‐carboxy‐ n ‐propyl) polydimethylsiloxane. The new polymer has some rubbery properties, but it decomposes catastrophically at 400°C.