The XV All-European Colloquium “Chemical Technology of Polymers” was held March 14–16, 1990, in Aachen (Germany). The colloquia are organized by the Institute of Polymer Processing (Aachen) and the German Chemical Society (Frankfurt am Main) and are sponsored by many chemical companies of the areas. Prof. W. Michaeli, director of the Institute of Polymer Processing (Aachen) is the chairman of the organizing committee.