TPC Group Inc. produces and sells value-added products derived from petrochemical raw materials to chemical and petroleum-based companies in North America. The company operates in two segments: C4 Processing and Performance Products. The C4 Processing segment offers butadiene, which is primarily used to produce synthetic rubber used in tires and other automotive products; butene-1, which is principally used in the manufacture of plastic resins and synthetic alcohols; raffinates, which are primarily used to manufacture alkylate; and methyl tertiary butyl ether, which is principally used as a gasoline blending stock. The Performance Products segment provides high-purity isobutylene, which is primarily used in the production of synthetic rubber, lubricant additives, surfactants, and coatings; conventional polyisobutylenes and highly reactive polyisobutylenes that are principally used in the production of fuel and lubricant additives, caulks, adhesives, sealants, and packaging; diisobutylene, which is primarily used in the manufacture of surfactants, plasticizers, and resins; and nonene and tetramer that are principally used in the production of plasticizers, surfactants, and lubricant additives. TPC Group Inc. was formerly known as Texas Petrochemicals Inc. and changed its name to TPC Group Inc. in January 2010. The company was founded in 1944 and is based in Houston, Texas with additional locations in Port Neches, Texas and Westlake, Louisiana.