1. Department of Polymer ChemistryChemnitz University of TechnologyFaculty of Natural Science 09107 Chemnitz Germany
2. Department of Inorganic ChemistryChemnitz University of TechnologyFaculty of Natural Science 09107 Chemnitz Germany
3. BASF SE Carl‐Bosch Straße 38 60756 Ludwigshafen Germany
4. BASF Polyurethanes GmbH Elastogranstraße 60 49448 Lemfoerde Germany