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Synthesis and thermal properties of [n]-polyurethanesStephan Neffgen; Jacqueline Kušan; Thomas Fey; Helmut Keul; Hartwig Höcker · 2000
Cationic Ring-Opening Polymerization of Trimethylene Urethane: A Mechanistic StudyNeffgen, Stephan; Keul, Helmut; Höcker, Hartwig · Macromolecules · 1997
Poly(tetrahydrofuran)-block-poly(trimethylene urethane): synthesis and characterizationStephan Neffgen; Helmut Keul; Hartwig Höcker · 1999
Ring-opening polymerization of cyclic urethanes and ring-closing depolymerization of the respective polyurethanesStephan Neffgen; Helmut Keul; Hartwig Höcker · 1996
Well defined polymer structures by ionic ring-opening polymerization of cyclic monomers comprising the respective structureKeul, Helmut; Melchiors, Martin; Neffgen, Stephan; Gotsche, Michael; Höcker, Hartwig · Macromolecular Symposia · 1996