“…), and the methods were improved during the following years. Apart from the green complex EWNN (FeTNa) the transparent cadoxene is the most important cellulose solvent (Brown 1967;Jayme 1971bJayme , 1978. Apart from the green complex EWNN (FeTNa) the transparent cadoxene is the most important cellulose solvent (Brown 1967;Jayme 1971bJayme , 1978.…”