Lanxess Aktiengesellschaft is a German specialty chemicals company based in Cologne, Germany that was founded in 2004 via the spin-off of the chemicals division and parts of the polymers business from Bayer AG. 

LANXESS AG engages in the development, manufacturing and marketing of plastics, rubber, intermediates and specialty chemicals. It operates through the following segments: Performance Polymers, Advanced Intermediates and Performance Chemicals. The Performance Polymers segment offers polymer activities and comprises the butyl rubber, performance butadiene rubbers, technical rubber products and semi-crystalline products business units. The Advanced Intermediates segment produces basic and fine chemicals. The Performance Chemicals segment offers seven application-oriented business units in the field of process and functional chemicals: material protection products, inorganic pigments, functional chemicals, leather, rhein chemie, rubber chemicals and Ion exchange resins. The company was founded on July 1, 2004 and is headquartered in Leverkusen, Germany.