Ernst J. Krendlinger studied chemistry at the university in Mainz (Germany). In 1990 he received his doctorate at the Max-Planck-Institute for Polymer Science in Mainz. From1990 to 1994, he worked as Technology Manager Coatings, Additives and Waxes for the company Lubrizol, formerly known as Langer & Co., in Cleveland (USA) and Ritterhude (Germany). In 1995, Krendlinger started to work as R&D manager for waxes at Clariant in Höchst (Germany). He was appointed head of the wax grinding unit for waxes in 2002. From 2008 to 2017, he worked as head of R & D manager for the company Deurex in Elsteraue. After his retirement he founded the companies “Dr. K - Wachs INTELLIGENCE” and EPW GmbH. Uwe H. Wolfmeier studied Physical Chemistry at the University of Hamburg. He received his doctorate in 1980 on a topic of solid-state chemistry. Following he joined the Plastics and Waxes Division of Hoechst AG in Frankfurt. After several years in polyethylene R&D, technical application, and pilot plant operation, he became a member of the Corporate Planning Department. Next, he was appointed Production Manager of a polyethylene plant in Bavaria. In 1988 he assumed responsibility for diverse functions in the Waxes and later also Plastics Additives business, in a managerial position at the Gersthofen plant site, near Augsburg. From 1997 he worked for Clariant in Switzerland. As an executive, from 2005 to his retirement in 2010, he was responsible for Product Safety worldwide. Plastics Additives business, in a managerial position at the Gersthofen plant site, near Augsburg. From 1997 he worked for Clariant in Switzerland. As an executive, from 2005 to his retirement in 2010, he was responsible for Product Safety worldwide.