TPC Group Inc. (TPCGI) is a producer of products derived from petrochemical raw materials, such as four-carbon (C4) hydrocarbons. The Company�s products are sold to producers of a range of performance, specialty and intermediate products, including synthetic rubber, fuels, lubricant additives, plastics and surfactants. The Company operates in two principal business segments, C4 Processing and Performance Products. In the C4 Processing segment, it processes the crude C4 stream into several components, namely butadiene, butene-1, raffinates and methyl tertiary-butyl ether (MTBE). In its Performance Products segment, it produces isobutylene, and it processes isobutylene to produce derivative products, such as polyisobutylene and diisobutylene. In December 2012, Company announced the completion of its acquisition by entities affiliated with First Reserve Corporation and SK Capital Partners.