LyondellBasell, Covestro declare force majeure on styrene from Maasvlakte POSM unit 12:24 PM | February 15, 2021 | Fahima Mathe, OPIS Mechanical failure caused shutdown on 10 February; unit produces 680,000 metric tons/year of styrene, 313,000 metric tons/year of propylene oxide. https://chemweek.com/CW/Document/117442/LyondellBasell-Covestro-declare-force-majeure-on-styrene-from-Maasvlakte-POSM-unit