Johannes Fink is a Professor of Polymer Chemistry at Montanuniversität Leoben in Styria, Austria. Dr. Fink teaches macromolecular chemistry. His career spans for more than thirty years in the field of polymers, including characterization, flame retardancy and pyrolysis of polymers. Johannes has published multiple books and articles, including Petroleum Engineer’s Guide to Oil Field Chemicals and Fluids, Second Edition, Water-Based Chemicals and Technology for Drilling, Completion, and Workover Fluids and Hydraulic Fracturing Chemicals and Fluids Technology, Second Edition, all published by Elsevier.