%0 conference lecture %@ %A Albrecht, W., Weigel, T., Seifert, B., Schossig-Tiedemann, M., Hilke, R., Paul, D. %D 2002 %J 15th International Congress of Chemical and Process Engineering, CHISA 2002 %T Amination of polyimide membranes using bi- or multivalent amines %U %X