Catalysts are of immense importance in manufacturing basic chemicals, intermediate and special chemicals, which makes them very important also in economic terms. For use in a continuous process, catalysts must have high long-time activities and stabilities. Despite intense efforts, no such powerful catalysts based on polymers have been available so far. A process has been developed, for the first time allowing catalysts with long-time stability to be produced on the basis of polymers, which can be used over a period of months up to years. In the manufacturing process, epoxy resins or cyanate ester resins are cured with the addition of metal compounds representing the catalytically active components in the resultant material. Variation of the resin and the metal compound allows nearly unlimited numbers of new catalysts to be made for a variety of uses. The catalysts can be employed as powders or granulates or, while still liquid and containing metals, applied to packed columns or reactor walls for curing. The production of catalysts is based on commercially available substances and saves time and money. Variation of numerous parameters in the production process allows a broad range of uses of the catalysts to be achieved.