1,000 Arco, Channelview, Tex. La. 2,000 Dow, Freeport, Tex. 1,400 Huntsman, Bayport, Tex. 1,250 Huntsman, Odessa, Tex. 320 Sterling, Texas City, Tex.
Commercial production is from ethylbenzene, obtained by alkylation of benzene with ethylene.
Arco's process produces styrene as a coproduct with propylene oxide. Amoco is stretching out an expansion plan to double capacity at Texas City. Initial design and engineering work has been completed, but the project has been put on hold and will probably not be completed in early 2000 as initially announced. Chevron added 200 million pounds of styrene capacity at St. James at the close of 1994. The company's new ethylbenzene plant at Pascagoula, Miss., is under construction toward scheduled startup in mid-1999.