The first plant at Bayport Choate started up in 1969 with additional facilities added in 1971, 1973 and 2022. The facility produces propylene oxide, propylene glycol, propylene glycol ether, tertiary butyl alcohol, high purity isobutylene, tertiary butyl hydroperoxide and ethyl tertiary-butyl ether. Our customers use our products to produce paint and coatings, home furnishings, auto parts, gasoline components, personal care products and antifreeze. It is also the largest propylene oxide/tertiary butyl alcohol (POTBA) site in the world based on production volume.