Wasmann, F.W.F.W.WasmannKeicher, T.T.KeicherLoeffel, D.D.Loeffel2022-03-082022-03-081995https://publica.fraunhofer.de/handle/publica/303266High-energy polyesters are produced by converting halogen-containing or halogen-free di- or poly- carbonic acids or their derivatives from the group of acid halides, amides or esters using halogen-free or halogen-containing diols or polyols by polycondensation into halogen polyesters and converting these into a nucleophile substitution reaction with a light metal acide into polyesters containing azide groups. Such polyesters are particularly suitable for use as binders for propellant and explosive systems.de608660patent1990-4019322