TPC Group Inc. produces specialized lines of chemical products to chemical and petroleum based companies worldwide. The company offers C4 processing products, including butadiene, which is used to produce synthetic rubber; butene-1x that is used in the manufacture of plastic resins, fuel additives, and synthetic alcohols; and raffinates and methyl tertiary butyl ether, which are used in gasoline blend stock formations. It also provides performance chemicals comprising isobutylene that is used in the production of specialty rubbers, lubricant additives, detergents, and coatings; polyisobutylenes, which are used in the production of fuel and lube additives, caulks, adhesives, sealants, and packaging; diisobutylene that is used in the manufacture of surfactants, plasticizers, and resins; and propylene derivatives, such as nonene and tetramer, which are used as intermediates in the production of plasticizers, lube oil additives, surfactants, antioxidants, and other performance products. The TPC Group Inc. was formerly known as Texas Petrochemicals Inc. and changed its name to TPC Group Inc. in January 2010. TPC Group was founded in 1943 and is headquartered in Houston, Texas.