A new C4 plant came on stream in Antwerp in 2002, the result of a 50-million euro investment. This plant manufactures products based on C4 raw materials, namely dibutene (a starter used in chemical processing) and MTBE (an additive that improves gasoline combustion). C4-based products from Antwerp are mainly used as chemical intermediates. After partial processing at OXENO in Marl and by our customers, C4 products can be used in applications covering areas ranging from cars to living rooms and leisure, to textiles and cosmetics. Evonik has a strong market and technology position in C4 products. With its production facilities in Marl and Antwerp the company has an integrated C4 production with modern methods based on own knowhow.