Formed in 1997, Equistar Chemicals, LP is a $6.5 billion chemical company that is part of the Lyondell enterprise. Equistar is a producer of ethylene, propylene and polyethylene. Its headquarters in Houston stretches across 16 manufacturing facilities along the United States Gulf Coast and in the Midwest. It continues through its 1,400-mile ethylene/propylene distribution system, which spans the Texas Gulf Coast.