Evonik Evonik is one of the world's leading specialty chemicals companies. It roots reach back to the beginning of the German industrial society. In 1909 Dr. Otto Roehm laid the foundations for the site in Darmstadt. For the exceptional invention of PLEXIGLAS®, the company was awarded the gold medal at the World Expo in Paris in 1937. During the past one hundred years and more, the site in Darmstadt has undergone major transitions. The activities in Darmstadt today form an important part of the company's portfolio.