Monolith Materials (formerly known as First Green), is a next-generation, carbon black manufacturing company which uses a proprietary process to convert natural gas to carbon black in a cost competitive and environmentally advantaged manner. Founded in 2012, Monolith Materials set out to find new ways to use abundant natural gas resources in the American chemical manufacturing industry. Monolith produces high quality carbon black for worldwide consumption, while reducing emissions and improving sustainability, leading the American manufacturing resurgence. Monolith’s process also produces hydrogen tail-gas, a valuable co-product that can be sold into the power generation or industrial gas markets. Warburg Pincus initially invested in First Green in 2011.