Evonik's Marl butadiene unit in Germany and its Antwerp facility in Belgium are expected to go offline in January, sources said Friday.
Both units are expected to be down for 10-12 days this month but it isn't yet clear when they will go down, one source said Friday.
Evonik wasn't immediately available for comment on the matter.
The Marl unit has a butadiene capacity of around 220,000 mt/year and the Antwerp unit increased butadiene capacity by 100,000 mt in 2015.
The outages comes after European butadiene FOB Rotterdam prices hit a more than three-and-a-half year high on Friday of $1,828/mt, the highest level since April 25, 2013. Prices spiked on a surge in Asia pulling in material and tight European availability, sources said.